81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a

Analysis

max time kernel
151s
max time network
149s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
18-10-2022 21:50

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General

Target

81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe
Size

227KB
MD5

51e5a087d3ef2140a2b4b921cec3de42
SHA1

2b4bc51bc96cf3cbf50ffe03b5819fb812a34c19
SHA256

81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a
SHA512

9a23fe082db3896cc1a268fde0fefb16d495a563708171cb475afd4148f56877ee777bf2edf8bd9a9f630322d4bebd2be5518166c7d47a9d823f78a4498f4f1f
SSDEEP

3072:YsXRmUIMitiMQose27vc+Eld+xZp2vPRL1tT06zJoxAWBcKpSP//dwRmRuq:ZR5IuMQoseGk7RZBGxAycKpSPX2Fq

Score

10^/10

evasion persistence spyware stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\format32.exe"	format32.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	format32.exe

Executes dropped EXE 3 IoCs

pid	Process
568	format32.exe
848	format32.exe
904	format32.exe

Deletes itself 1 IoCs

pid	Process
640	cmd.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

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\format32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe"	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*QWRtaW4= = "C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\format32.exe"	format32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*format32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe"	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 568 set thread context of 1892	568	format32.exe	33

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1972	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
652	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
1892	InstallUtil.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
1892	InstallUtil.exe
1892	InstallUtil.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
1892	InstallUtil.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
1892	InstallUtil.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
568	format32.exe
1892	InstallUtil.exe
568	format32.exe
568	format32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	568	format32.exe
Token: SeDebugPrivilege	1892	InstallUtil.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 568	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	27
PID 996 wrote to memory of 568	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	27
PID 996 wrote to memory of 568	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	27
PID 996 wrote to memory of 1476	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	28
PID 996 wrote to memory of 1476	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	28
PID 996 wrote to memory of 1476	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	28
PID 996 wrote to memory of 640	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	30
PID 996 wrote to memory of 640	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	30
PID 996 wrote to memory of 640	996	81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe	30
PID 640 wrote to memory of 652	640	cmd.exe	32
PID 640 wrote to memory of 652	640	cmd.exe	32
PID 640 wrote to memory of 652	640	cmd.exe	32
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1892	568	format32.exe	33
PID 568 wrote to memory of 1972	568	format32.exe	35
PID 568 wrote to memory of 1972	568	format32.exe	35
PID 568 wrote to memory of 1972	568	format32.exe	35
PID 2032 wrote to memory of 848	2032	taskeng.exe	39
PID 2032 wrote to memory of 848	2032	taskeng.exe	39
PID 2032 wrote to memory of 848	2032	taskeng.exe	39
PID 2032 wrote to memory of 904	2032	taskeng.exe	40
PID 2032 wrote to memory of 904	2032	taskeng.exe	40
PID 2032 wrote to memory of 904	2032	taskeng.exe	40

C:\Users\Admin\AppData\Local\Temp\81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe
"C:\Users\Admin\AppData\Local\Temp\81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:996
- C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe
  "C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:568
- - \??\c:\windows\microsoft.net\framework\v2.0.50727\InstallUtil.exe
    "c:\windows\microsoft.net\framework\v2.0.50727\\InstallUtil.exe" C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1892
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /tn Admin /tr "\"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe\" arguments" /sc MINUTE /mo 1
    3⤵
    - Creates scheduled task(s)
    PID:1972
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe"
  2⤵
  PID:1476
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 && del "C:\Users\Admin\AppData\Local\Temp\81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe" && del "C:\Users\Admin\AppData\Local\Temp\81afd25a71243d161133a5eed7100c93ea9035019b54d604b0b1b81052ee975a.exe.config"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:640
- - C:\Windows\system32\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:652

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1752

C:\Windows\system32\taskeng.exe
taskeng.exe {28FF882B-63E6-4876-BE37-A062D9612225} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe
  C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe arguments
  2⤵
  - Executes dropped EXE
  PID:848
- C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe
  C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe arguments
  2⤵
  - Executes dropped EXE
  PID:904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Winlogon Helper DLL

T1004

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe

Filesize
227KB

MD5
5c0d97618ae9a791191badd14c914df2

SHA1
3b20aa145232fca0c0224b7d5984bd81445c1b44

SHA256
d83e85ff5f16361074f50f9601d4e2653cb6e26e184f415447416fddd8c42ccb

SHA512
8fb57830ffdcb6613cfb27f90d65a20c578fa8fb711ff193cbe4ed4fa2dd75ef4635267466aba51c9bcdab94e2bca05aab222678e54af17842dfb3f441abbc0e

Download Submit
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe

Filesize
227KB

MD5
5c0d97618ae9a791191badd14c914df2

SHA1
3b20aa145232fca0c0224b7d5984bd81445c1b44

SHA256
d83e85ff5f16361074f50f9601d4e2653cb6e26e184f415447416fddd8c42ccb

SHA512
8fb57830ffdcb6613cfb27f90d65a20c578fa8fb711ff193cbe4ed4fa2dd75ef4635267466aba51c9bcdab94e2bca05aab222678e54af17842dfb3f441abbc0e

Download Submit
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe

Filesize
227KB

MD5
5c0d97618ae9a791191badd14c914df2

SHA1
3b20aa145232fca0c0224b7d5984bd81445c1b44

SHA256
d83e85ff5f16361074f50f9601d4e2653cb6e26e184f415447416fddd8c42ccb

SHA512
8fb57830ffdcb6613cfb27f90d65a20c578fa8fb711ff193cbe4ed4fa2dd75ef4635267466aba51c9bcdab94e2bca05aab222678e54af17842dfb3f441abbc0e

Download Submit
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe

Filesize
227KB

MD5
5c0d97618ae9a791191badd14c914df2

SHA1
3b20aa145232fca0c0224b7d5984bd81445c1b44

SHA256
d83e85ff5f16361074f50f9601d4e2653cb6e26e184f415447416fddd8c42ccb

SHA512
8fb57830ffdcb6613cfb27f90d65a20c578fa8fb711ff193cbe4ed4fa2dd75ef4635267466aba51c9bcdab94e2bca05aab222678e54af17842dfb3f441abbc0e

Download Submit
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\format32.exe.config

Filesize
1KB

MD5
dd3d04c365984b4ec57a80503f81fddf

SHA1
c55fbcb61818e47dac9aae465faff91f0805bd7c

SHA256
40a59ca9744dc3d4647f246b2dc553f37f8095418c1b48a9bd94cdb5c03dbc5c

SHA512
0dd459def2abe9e3f0d1251049a0755c63f7dd3d85e91dba272c3f479f2578e3f3f2379e1cd6913190f7f596af721201eb5d9423ab28aed72bde5cd3cac7f785

Download Submit
memory/568-66-0x0000000001E36000-0x0000000001E55000-memory.dmp

Filesize
124KB

Download
memory/568-56-0x0000000000000000-mapping.dmp

Download
memory/568-61-0x000007FEF3890000-0x000007FEF42B3000-memory.dmp

Filesize
10.1MB

Download
memory/568-64-0x000007FEF2110000-0x000007FEF31A6000-memory.dmp

Filesize
16.6MB

Download
memory/568-67-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmp

Filesize
8KB

Download
memory/568-82-0x0000000001E36000-0x0000000001E55000-memory.dmp

Filesize
124KB

Download
memory/640-62-0x0000000000000000-mapping.dmp

Download
memory/652-65-0x0000000000000000-mapping.dmp

Download
memory/848-84-0x0000000000000000-mapping.dmp

Download
memory/904-92-0x0000000001FE6000-0x0000000002005000-memory.dmp

Filesize
124KB

Download
memory/904-91-0x0000000001FE6000-0x0000000002005000-memory.dmp

Filesize
124KB

Download
memory/904-89-0x000007FEF2110000-0x000007FEF31A6000-memory.dmp

Filesize
16.6MB

Download
memory/904-88-0x000007FEF3890000-0x000007FEF42B3000-memory.dmp

Filesize
10.1MB

Download
memory/904-86-0x0000000000000000-mapping.dmp

Download
memory/996-63-0x0000000002006000-0x0000000002025000-memory.dmp

Filesize
124KB

Download
memory/996-54-0x000007FEF3890000-0x000007FEF42B3000-memory.dmp

Filesize
10.1MB

Download
memory/996-55-0x000007FEF2110000-0x000007FEF31A6000-memory.dmp

Filesize
16.6MB

Download
memory/1476-59-0x0000000000000000-mapping.dmp

Download
memory/1892-73-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1892-80-0x0000000074650000-0x0000000074BFB000-memory.dmp

Filesize
5.7MB

Download
memory/1892-83-0x0000000074650000-0x0000000074BFB000-memory.dmp

Filesize
5.7MB

Download
memory/1892-79-0x00000000760E1000-0x00000000760E3000-memory.dmp

Filesize
8KB

Download
memory/1892-78-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1892-76-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1892-68-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1892-69-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1892-71-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1892-74-0x000000000040334E-mapping.dmp

Download
memory/1892-72-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1972-81-0x0000000000000000-mapping.dmp

Download