redline | 58dd74be00f9f4aee71592466446b7664ea57418eda8eb643e1400bf2518a45f

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01-10-2022 00:57

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General

Target

58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe
Size

137KB
MD5

adf162028e5b01840010d1a79ae6bdf1
SHA1

9ce0e40ae78fa71ab43f4e8acf2d855b0ea7ebcd
SHA256

58dd74be00f9f4aee71592466446b7664ea57418eda8eb643e1400bf2518a45f
SHA512

30e27bd75a588b03f086a93d5f4d759a386b043c30caeddbb226921bb8ce3392334c9d4e901f6662e6307702ffe7ca5d79724645e80819f64b3a0a9641946fa0
SSDEEP

3072:VYO/ZMTFlxUI5rUdiKSk42oxKaVgDF0pRXqh1SS4i:VYMZMBlxUI6f42oxKV2Bqh

Score

10^/10

redline remcos firefox lupefox collection discovery infostealer persistence rat spyware stealer

Malware Config

Extracted

Family

redline

Botnet

LUPEFOX

o0l0j0jo.webredirect.org:28532

Attributes

auth_value
90194e50cef153fc9816a29fd46b6637

Extracted

Family

remcos

Botnet

Firefox

elew3le3lanle.freeddns.org:20309

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Firefox
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-Z26APQ
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Firefox
take_screenshot_option
false
take_screenshot_time
5

Signatures

RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1288-132-0x0000000000BA0000-0x0000000000BC8000-memory.dmp	family_redline

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4564-161-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/1728-163-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4564-161-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/1596-162-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1728-163-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Downloads MZ/PE file
Executes dropped EXE 5 IoCs

Processes:

Firefox.exeremcos.exeremcos.exeremcos.exeremcos.exe

pid process

1484 Firefox.exe
3044 remcos.exe
1728 remcos.exe
4564 remcos.exe
1596 remcos.exe

pid	process
1484	Firefox.exe
3044	remcos.exe
1728	remcos.exe
4564	remcos.exe
1596	remcos.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Firefox.exeWScript.exe58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	Firefox.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	58dd74be00f9f4aee71592466446b7664ea57418eda8e.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 Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

remcos.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	remcos.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

remcos.exeFirefox.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Firefox = "\"C:\\ProgramData\\Firefox\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Firefox.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Firefox = "\"C:\\ProgramData\\Firefox\\remcos.exe\""	Firefox.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	Firefox.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Firefox = "\"C:\\ProgramData\\Firefox\\remcos.exe\""	Firefox.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Firefox = "\"C:\\ProgramData\\Firefox\\remcos.exe\""	remcos.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

Suspicious use of SetThreadContext 4 IoCs

Processes:

remcos.exe

description	pid	process	target process
PID 3044 set thread context of 1996	3044	remcos.exe	svchost.exe
PID 3044 set thread context of 1728	3044	remcos.exe	remcos.exe
PID 3044 set thread context of 4564	3044	remcos.exe	remcos.exe
PID 3044 set thread context of 1596	3044	remcos.exe	remcos.exe

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

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

Firefox.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings Firefox.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings	Firefox.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

58dd74be00f9f4aee71592466446b7664ea57418eda8e.exeremcos.exeremcos.exe

pid	process
1288	58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe
1288	58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe
1728	remcos.exe
1728	remcos.exe
1596	remcos.exe
1596	remcos.exe
1728	remcos.exe
1728	remcos.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

remcos.exe

pid process

3044 remcos.exe
3044 remcos.exe
3044 remcos.exe
3044 remcos.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

58dd74be00f9f4aee71592466446b7664ea57418eda8e.exeremcos.exe

description pid process

Token: SeDebugPrivilege 1288 58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe
Token: SeDebugPrivilege 1596 remcos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

remcos.exe

pid process

3044 remcos.exe

pid	process
3044	remcos.exe
3044	remcos.exe
3044	remcos.exe
3044	remcos.exe

description	pid	process
Token: SeDebugPrivilege	1288	58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe
Token: SeDebugPrivilege	1596	remcos.exe

pid	process
3044	remcos.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

58dd74be00f9f4aee71592466446b7664ea57418eda8e.exeFirefox.exeWScript.execmd.exeremcos.exe

description	pid	process	target process
PID 1288 wrote to memory of 1484	1288	58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe	Firefox.exe
PID 1288 wrote to memory of 1484	1288	58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe	Firefox.exe
PID 1288 wrote to memory of 1484	1288	58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe	Firefox.exe
PID 1484 wrote to memory of 4852	1484	Firefox.exe	WScript.exe
PID 1484 wrote to memory of 4852	1484	Firefox.exe	WScript.exe
PID 1484 wrote to memory of 4852	1484	Firefox.exe	WScript.exe
PID 4852 wrote to memory of 3192	4852	WScript.exe	cmd.exe
PID 4852 wrote to memory of 3192	4852	WScript.exe	cmd.exe
PID 4852 wrote to memory of 3192	4852	WScript.exe	cmd.exe
PID 3192 wrote to memory of 3044	3192	cmd.exe	remcos.exe
PID 3192 wrote to memory of 3044	3192	cmd.exe	remcos.exe
PID 3192 wrote to memory of 3044	3192	cmd.exe	remcos.exe
PID 3044 wrote to memory of 1996	3044	remcos.exe	svchost.exe
PID 3044 wrote to memory of 1996	3044	remcos.exe	svchost.exe
PID 3044 wrote to memory of 1996	3044	remcos.exe	svchost.exe
PID 3044 wrote to memory of 1996	3044	remcos.exe	svchost.exe
PID 3044 wrote to memory of 1728	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 1728	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 1728	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 4564	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 4564	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 4564	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 1596	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 1596	3044	remcos.exe	remcos.exe
PID 3044 wrote to memory of 1596	3044	remcos.exe	remcos.exe

C:\Users\Admin\AppData\Local\Temp\58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe
"C:\Users\Admin\AppData\Local\Temp\58dd74be00f9f4aee71592466446b7664ea57418eda8e.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1288

C:\Users\Admin\AppData\Local\Temp\Firefox.exe
"C:\Users\Admin\AppData\Local\Temp\Firefox.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1484

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Firefox\remcos.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:3192

C:\ProgramData\Firefox\remcos.exe
C:\ProgramData\Firefox\remcos.exe
5⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3044

C:\Windows\SysWOW64\svchost.exe
svchost.exe
6⤵
PID:1996

C:\ProgramData\Firefox\remcos.exe
C:\ProgramData\Firefox\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\iykblenkmsrphfpebsrmzqxenzr"
6⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1728

C:\ProgramData\Firefox\remcos.exe
C:\ProgramData\Firefox\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\kaptmwymaajcrmeilvdncvsnwnbjus"
6⤵
- Executes dropped EXE
- Accesses Microsoft Outlook accounts
PID:4564

C:\ProgramData\Firefox\remcos.exe
C:\ProgramData\Firefox\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\vuveeoifoibgtsamcgqhmifefuskndtak"
6⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1596

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\Firefox\remcos.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\ProgramData\Firefox\remcos.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\ProgramData\Firefox\remcos.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\ProgramData\Firefox\remcos.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\ProgramData\Firefox\remcos.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Firefox.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Firefox.exe
Filesize
469KB

MD5
a0c98858ea96edb2386c86e1786f3419

SHA1
461ece495d357885b8ab78341374d830ad88cb76

SHA256
269546bd718741529021774e7032cf8da5075e2d18852ee0859c3c7a854f5950

SHA512
0d0f7ac9a4450be50e66ca6595870118a28cefe1d4fb4289be6f0e7747a90bfad7e899ae93ae78d8effdbdf156b313e40f18db633cd8c1b763c4ccb7d974febb

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs
Filesize
514B

MD5
a3a9983bd270c323c4980b3c9b4e6e39

SHA1
7d72d0460122d13c2c1edb2840e987d72f93b95a

SHA256
56eae8770dc7c1981653fa300824c7abb544c8d3cd91fe307c44092a7a547ab8

SHA512
c6df00228a588d447a66fed8b4e5bbbe81c94a132d67c92376ac7d94c53321151087e62041edb58eb6d812e178d0d627f38f24850057cc4fd0e541b79aa24c43

Download Submit
C:\Users\Admin\AppData\Local\Temp\iykblenkmsrphfpebsrmzqxenzr
Filesize
4KB

MD5
952a930b9fe70f809a67cb4e765c9448

SHA1
7e6c235246cc1be14d8a01ee7688a2a2471d44c9

SHA256
bd8156713974af3003c418302d3647fa84f62836fe83613c05e8bc40cb06a867

SHA512
10d12f2412fd2cb9ecf47cccd0261b17d9a3323957602c06795c4b2244306837d0a979ec6e552dc023ee81719ebcb9455bdb6f9d44f07788664994d1498452fb

Download Submit
memory/1288-136-0x00000000055A0000-0x00000000055DC000-memory.dmp

Filesize
240KB

Download
memory/1288-142-0x0000000007C70000-0x0000000007E32000-memory.dmp

Filesize
1.8MB

Download
memory/1288-143-0x0000000008370000-0x000000000889C000-memory.dmp

Filesize
5.2MB

Download
memory/1288-133-0x0000000005B20000-0x0000000006138000-memory.dmp

Filesize
6.1MB

Download
memory/1288-139-0x0000000005AA0000-0x0000000005B06000-memory.dmp

Filesize
408KB

Download
memory/1288-138-0x00000000066F0000-0x0000000006C94000-memory.dmp

Filesize
5.6MB

Download
memory/1288-137-0x0000000005900000-0x0000000005992000-memory.dmp

Filesize
584KB

Download
memory/1288-132-0x0000000000BA0000-0x0000000000BC8000-memory.dmp

Filesize
160KB

Download
memory/1288-134-0x0000000005610000-0x000000000571A000-memory.dmp

Filesize
1.0MB

Download
memory/1288-140-0x00000000079D0000-0x0000000007A46000-memory.dmp

Filesize
472KB

Download
memory/1288-141-0x0000000007A50000-0x0000000007AA0000-memory.dmp

Filesize
320KB

Download
memory/1288-135-0x0000000005540000-0x0000000005552000-memory.dmp

Filesize
72KB

Download
memory/1484-144-0x0000000000000000-mapping.dmp

Download
memory/1596-162-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1596-159-0x0000000000000000-mapping.dmp

Download
memory/1728-155-0x0000000000000000-mapping.dmp

Download
memory/1728-163-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1996-154-0x0000000000780000-0x00000000007FF000-memory.dmp

Filesize
508KB

Download
memory/1996-153-0x0000000000000000-mapping.dmp

Download
memory/3044-150-0x0000000000000000-mapping.dmp

Download
memory/3192-149-0x0000000000000000-mapping.dmp

Download
memory/4564-157-0x0000000000000000-mapping.dmp

Download
memory/4564-161-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/4852-147-0x0000000000000000-mapping.dmp

Download