djvu | e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877

Analysis

max time kernel
95s
max time network
152s
platform
windows10_x64
resource
win10v20210408
submitted
15-09-2021 06:40

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General

Target

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
Size

721KB
MD5

ec687802910d091a6538b620560eb07c
SHA1

90181b23ddf06d2c570781295b9b3cf1c2aa651f
SHA256

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877
SHA512

6c080beadc200da2dc392f2e77086f902eb6829c245b932f273e426a1964b435b66485d0d6e1336f955f072e0b71a824483829f226ca37834694b15fe5613684

Score

10^/10

djvu vidar 517 discovery persistence ransomware spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

40.6

Botnet

517

https://dimonbk83.tumblr.com/

Attributes

profile_id
517

Signatures

Detected Djvu ransomware 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/396-114-0x0000000002560000-0x000000000267B000-memory.dmp	family_djvu
behavioral1/memory/1204-115-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1204-116-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/1204-117-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2380-122-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/2380-127-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 6 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/3936-132-0x00000000004A02AD-mapping.dmp	family_vidar
behavioral1/memory/3936-131-0x0000000000400000-0x00000000004D7000-memory.dmp	family_vidar
behavioral1/memory/3620-134-0x0000000003440000-0x0000000003514000-memory.dmp	family_vidar
behavioral1/memory/3936-138-0x0000000000400000-0x00000000004D7000-memory.dmp	family_vidar
behavioral1/memory/3916-162-0x0000000003250000-0x000000000339A000-memory.dmp	family_vidar
behavioral1/memory/1196-167-0x0000000003250000-0x00000000032FE000-memory.dmp	family_vidar

Downloads MZ/PE file
Executes dropped EXE 8 IoCs

Processes:

build2.exebuild2.exebuild3.exebuild3.exemstsca.exemstsca.exemstsca.exemstsca.exe

pid process

3620 build2.exe
3936 build2.exe
4092 build3.exe
4020 build3.exe
3916 mstsca.exe
3900 mstsca.exe
1196 mstsca.exe
1316 mstsca.exe
Loads dropped DLL 2 IoCs

Processes:

build2.exe

pid process

3936 build2.exe
3936 build2.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exe

pid process

1644 icacls.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

pid	process
3620	build2.exe
3936	build2.exe
4092	build3.exe
4020	build3.exe
3916	mstsca.exe
3900	mstsca.exe
1196	mstsca.exe
1316	mstsca.exe

pid	process
3936	build2.exe
3936	build2.exe

pid	process
1644	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bea67ec4-f641-4960-b34b-8c91ce701fe6\\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe\" --AutoStart"	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 api.2ip.ua
7 api.2ip.ua
14 api.2ip.ua

flow	ioc
6	api.2ip.ua
7	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 6 IoCs

Processes:

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exee9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exebuild2.exebuild3.exemstsca.exemstsca.exe

description	pid	process	target process
PID 396 set thread context of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 set thread context of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 3620 set thread context of 3936	3620	build2.exe	build2.exe
PID 4092 set thread context of 4020	4092	build3.exe	build3.exe
PID 3916 set thread context of 3900	3916	mstsca.exe	mstsca.exe
PID 1196 set thread context of 1316	1196	mstsca.exe	mstsca.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

build2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	build2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	build2.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

3128 schtasks.exe
2228 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1608 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

500 taskkill.exe

pid	process
3128	schtasks.exe
2228	schtasks.exe

pid	process
1608	timeout.exe

pid	process
500	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exee9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exebuild2.exe

pid	process
1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
3936	build2.exe
3936	build2.exe
3936	build2.exe
3936	build2.exe
3936	build2.exe
3936	build2.exe
3936	build2.exe
3936	build2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 500 taskkill.exe

description	pid	process
Token: SeDebugPrivilege	500	taskkill.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exee9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exee9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exee9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exebuild2.exebuild3.exebuild3.exebuild2.execmd.exemstsca.exe

description	pid	process	target process
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 396 wrote to memory of 1204	396	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1204 wrote to memory of 1644	1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	icacls.exe
PID 1204 wrote to memory of 1644	1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	icacls.exe
PID 1204 wrote to memory of 1644	1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	icacls.exe
PID 1204 wrote to memory of 1836	1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1204 wrote to memory of 1836	1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1204 wrote to memory of 1836	1204	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 1836 wrote to memory of 2380	1836	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
PID 2380 wrote to memory of 3620	2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	build2.exe
PID 2380 wrote to memory of 3620	2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	build2.exe
PID 2380 wrote to memory of 3620	2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 3620 wrote to memory of 3936	3620	build2.exe	build2.exe
PID 2380 wrote to memory of 4092	2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	build3.exe
PID 2380 wrote to memory of 4092	2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	build3.exe
PID 2380 wrote to memory of 4092	2380	e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4092 wrote to memory of 4020	4092	build3.exe	build3.exe
PID 4020 wrote to memory of 3128	4020	build3.exe	schtasks.exe
PID 4020 wrote to memory of 3128	4020	build3.exe	schtasks.exe
PID 4020 wrote to memory of 3128	4020	build3.exe	schtasks.exe
PID 3936 wrote to memory of 2216	3936	build2.exe	cmd.exe
PID 3936 wrote to memory of 2216	3936	build2.exe	cmd.exe
PID 3936 wrote to memory of 2216	3936	build2.exe	cmd.exe
PID 2216 wrote to memory of 500	2216	cmd.exe	taskkill.exe
PID 2216 wrote to memory of 500	2216	cmd.exe	taskkill.exe
PID 2216 wrote to memory of 500	2216	cmd.exe	taskkill.exe
PID 2216 wrote to memory of 1608	2216	cmd.exe	timeout.exe
PID 2216 wrote to memory of 1608	2216	cmd.exe	timeout.exe
PID 2216 wrote to memory of 1608	2216	cmd.exe	timeout.exe
PID 3916 wrote to memory of 3900	3916	mstsca.exe	mstsca.exe
PID 3916 wrote to memory of 3900	3916	mstsca.exe	mstsca.exe
PID 3916 wrote to memory of 3900	3916	mstsca.exe	mstsca.exe

C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
"C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:396

C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
"C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe"
2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1204

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\bea67ec4-f641-4960-b34b-8c91ce701fe6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1644

C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
"C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1836

C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
"C:\Users\Admin\AppData\Local\Temp\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2380

C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe
"C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe"
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3620

C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe
"C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe"
6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3936

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe" & del C:\ProgramData\*.dll & exit
7⤵
- Suspicious use of WriteProcessMemory
PID:2216

C:\Windows\SysWOW64\taskkill.exe
taskkill /im build2.exe /f
8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:500

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
8⤵
- Delays execution with timeout.exe
PID:1608

C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe
"C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe"
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4092

C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe
"C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe"
6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4020

C:\Windows\SysWOW64\schtasks.exe
/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
7⤵
- Creates scheduled task(s)
PID:3128

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3916

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
2⤵
- Executes dropped EXE
PID:3900

C:\Windows\SysWOW64\schtasks.exe
/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
3⤵
- Creates scheduled task(s)
PID:2228

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:1196

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
2⤵
- Executes dropped EXE
PID:1316

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

File Permissions Modification

T1222

Modify Registry

T1112

Install Root Certificate

T1130

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\freebl3.dll
MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

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C:\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

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C:\ProgramData\msvcp140.dll
MD5
109f0f02fd37c84bfc7508d4227d7ed5

SHA1
ef7420141bb15ac334d3964082361a460bfdb975

SHA256
334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

SHA512
46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

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C:\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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C:\ProgramData\softokn3.dll
MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

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C:\ProgramData\vcruntime140.dll
MD5
7587bf9cb4147022cd5681b015183046

SHA1
f2106306a8f6f0da5afb7fc765cfa0757ad5a628

SHA256
c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

SHA512
0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD5
62757782a1d135f2ecfc2c3ff463e986

SHA1
df6b239cbb9f3205c0326a2326050390736100e0

SHA256
507ea93e81dc5285eb78b6f8667d2644d215aa89c91a288d70b49568c0f8eaa3

SHA512
9ca71164c53b50cad448880ac672347a05946fc91bb244dc3460288f70a189677ab8aeb7c57db37f7ee905d5b9f93acdb19a7bfbdae2a160b20f8d00643b4410

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5
c63047d17999d4783b9d02035f2faee1

SHA1
1032a1393265a62b56f4a527f0c63da3688686c4

SHA256
d998577e784a0c8a39aff05661d37c7bd6af88af662a977fdaf578be6269a362

SHA512
dc5ea11d3808b18925d74cb20b8e1793cc8f4ba5c35fd6e47a269c345cc6c699e5366a5d88afbf2ad9ad5c8ca5b20013e8f3c52e013124a26511c09f85975a37

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
MD5
82a1a38d9e1578567b3ced2559e3b8a0

SHA1
d697155f09592a53c7cae6f0197fa51aa1da3d26

SHA256
e1696861d4d1b265597e80c769e257fbc15749bc5359c60578931613cc72ede6

SHA512
83f8fa3cd4fc51062d346dc1f56286ff8228f8996fa634a6efd4d24ca5fbb325a6cd87cc46837834adfec0a6d0ef60cae6820714b4a007b485993f4113dc4faa

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
MD5
d3cf70b8aa102193ae9d30cf00dbe9c2

SHA1
be8474b0307984bdaab0ebd6614e70165f90af45

SHA256
07a5210ba1e2e01d9654538b88539e7932750549e2f1e72c2a091ecd54f5efd5

SHA512
d9ce218cbc973691532db85d6f4e235ea382b0a38258b2b190570bfbc1779cbe8ebecd2c5dc7e923e3180e1730df0b2add671ad5928b3a9523df732741d8c289

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C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe
MD5
70d644484154523046292dffd74c7b16

SHA1
06266ea82865e14da5f1e71f403ae7f3e98e67f1

SHA256
86c773e97e1b1e59c48d72262cced026e06ad927b3e8d171bcfe0c8304d59ba4

SHA512
aab119f2f4a144b3263f6bbc884ab0c5003ba6bb99928dc23a8924f7c04ad46135f020b20a63670ca071ec1b56da3b2e633b19dda77221221c2b5dd1f250fcbc

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C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe
MD5
70d644484154523046292dffd74c7b16

SHA1
06266ea82865e14da5f1e71f403ae7f3e98e67f1

SHA256
86c773e97e1b1e59c48d72262cced026e06ad927b3e8d171bcfe0c8304d59ba4

SHA512
aab119f2f4a144b3263f6bbc884ab0c5003ba6bb99928dc23a8924f7c04ad46135f020b20a63670ca071ec1b56da3b2e633b19dda77221221c2b5dd1f250fcbc

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C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build2.exe
MD5
70d644484154523046292dffd74c7b16

SHA1
06266ea82865e14da5f1e71f403ae7f3e98e67f1

SHA256
86c773e97e1b1e59c48d72262cced026e06ad927b3e8d171bcfe0c8304d59ba4

SHA512
aab119f2f4a144b3263f6bbc884ab0c5003ba6bb99928dc23a8924f7c04ad46135f020b20a63670ca071ec1b56da3b2e633b19dda77221221c2b5dd1f250fcbc

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C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Local\82e9f514-90fb-4ae2-95fb-3e4043fa3fd1\build3.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Local\bea67ec4-f641-4960-b34b-8c91ce701fe6\e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877.exe
MD5
ec687802910d091a6538b620560eb07c

SHA1
90181b23ddf06d2c570781295b9b3cf1c2aa651f

SHA256
e9c5b6396a91553256817b830cf2d1fc509ba926754f007088add0698d152877

SHA512
6c080beadc200da2dc392f2e77086f902eb6829c245b932f273e426a1964b435b66485d0d6e1336f955f072e0b71a824483829f226ca37834694b15fe5613684

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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
MD5
0fea771099e342facd95a9d659548919

SHA1
9f8b56a37870f8b4ac5aa0ff5677a666f94c7197

SHA256
6f032f671284b3812373e90b0ab5b16ea737bd7dc87d22b8f2aabe558334e403

SHA512
2c1eeb2909acdc1ac36a677dba5131775e97dd107cd60f03bc6672be1791b2dd83a9f588719cb376cc4771570c6b2c202e783e30450ae3c2aa48bbaf2ee049c3

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\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

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\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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memory/396-114-0x0000000002560000-0x000000000267B000-memory.dmp

Filesize
1.1MB

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memory/500-148-0x0000000000000000-mapping.dmp

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memory/1196-167-0x0000000003250000-0x00000000032FE000-memory.dmp

Filesize
696KB

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memory/1204-117-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/1204-116-0x0000000000424141-mapping.dmp

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memory/1204-115-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/1316-165-0x0000000000401AFA-mapping.dmp

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memory/1608-149-0x0000000000000000-mapping.dmp

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memory/1644-118-0x0000000000000000-mapping.dmp

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memory/1836-120-0x0000000000000000-mapping.dmp

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memory/2216-147-0x0000000000000000-mapping.dmp

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memory/2228-161-0x0000000000000000-mapping.dmp

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memory/2380-127-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/2380-122-0x0000000000424141-mapping.dmp

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memory/3128-142-0x0000000000000000-mapping.dmp

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memory/3620-128-0x0000000000000000-mapping.dmp

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memory/3620-134-0x0000000003440000-0x0000000003514000-memory.dmp

Filesize
848KB

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memory/3900-159-0x0000000000401AFA-mapping.dmp

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memory/3916-162-0x0000000003250000-0x000000000339A000-memory.dmp

Filesize
1.3MB

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memory/3936-138-0x0000000000400000-0x00000000004D7000-memory.dmp

Filesize
860KB

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memory/3936-131-0x0000000000400000-0x00000000004D7000-memory.dmp

Filesize
860KB

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memory/3936-132-0x00000000004A02AD-mapping.dmp

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memory/4020-139-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

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memory/4020-140-0x0000000000401AFA-mapping.dmp

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memory/4020-144-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

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memory/4092-135-0x0000000000000000-mapping.dmp

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memory/4092-143-0x0000000003610000-0x0000000003614000-memory.dmp

Filesize
16KB

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