darkcomet | add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece

General

Target

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe
Size

609KB
MD5

acd56cef01889b7ff2b8b1f39cbcf3f5
SHA1

683cfb3d1096845a611737ba331dc97629696900
SHA256

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece
SHA512

254b25a4907582c6a9d7b562448b800376fdf490119d5972282b6f5b89f58ee3a5d6ecb70c83a663cf32e28a880da249a97212a5768dbec978b18b7338bb3744
SSDEEP

12288:use58KBby4sgTDh25dau/ONUBWGNQcEqFWEAr7BwhP42GlkshJRDdQQ9gU/:usepmg3hbqBucE/EAWhw20dQGg

Score

10^/10

darkcomet windowsreg persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

windowsreg

C2

heyhey123.no-ip.org:1803

Mutex

DC_MUTEX-Q4WFDU4

Attributes

gencode
u5zZfFtsaBH9
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Executes dropped EXE 2 IoCs

Processes:

tmpDC7A.tmp.exetmpDC7A.tmp.exe

pid process

3080 tmpDC7A.tmp.exe
5044 tmpDC7A.tmp.exe

pid	process
3080	tmpDC7A.tmp.exe
5044	tmpDC7A.tmp.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tmpDC7A.tmp.exetmpDC7A.tmp.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1251160321 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tmpDC7A.tmp.exe\""	tmpDC7A.tmp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1617546977 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tmpDC7A.tmp.exe\""	tmpDC7A.tmp.exe

Drops desktop.ini file(s) 2 IoCs

Processes:

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

description	ioc	process
File created	C:\Windows\assembly\Desktop.ini	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

description pid process target process

PID 736 set thread context of 636 736 add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe vbc.exe

description	pid	process	target process
PID 736 set thread context of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe

Drops file in Windows directory 3 IoCs

Processes:

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

description	ioc	process
File opened for modification	C:\Windows\assembly	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe
File created	C:\Windows\assembly\Desktop.ini	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 27 IoCs

Processes:

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exetmpDC7A.tmp.exetmpDC7A.tmp.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe
Token: SeDebugPrivilege	3080	tmpDC7A.tmp.exe
Token: SeDebugPrivilege	5044	tmpDC7A.tmp.exe
Token: SeIncreaseQuotaPrivilege	636	vbc.exe
Token: SeSecurityPrivilege	636	vbc.exe
Token: SeTakeOwnershipPrivilege	636	vbc.exe
Token: SeLoadDriverPrivilege	636	vbc.exe
Token: SeSystemProfilePrivilege	636	vbc.exe
Token: SeSystemtimePrivilege	636	vbc.exe
Token: SeProfSingleProcessPrivilege	636	vbc.exe
Token: SeIncBasePriorityPrivilege	636	vbc.exe
Token: SeCreatePagefilePrivilege	636	vbc.exe
Token: SeBackupPrivilege	636	vbc.exe
Token: SeRestorePrivilege	636	vbc.exe
Token: SeShutdownPrivilege	636	vbc.exe
Token: SeDebugPrivilege	636	vbc.exe
Token: SeSystemEnvironmentPrivilege	636	vbc.exe
Token: SeChangeNotifyPrivilege	636	vbc.exe
Token: SeRemoteShutdownPrivilege	636	vbc.exe
Token: SeUndockPrivilege	636	vbc.exe
Token: SeManageVolumePrivilege	636	vbc.exe
Token: SeImpersonatePrivilege	636	vbc.exe
Token: SeCreateGlobalPrivilege	636	vbc.exe
Token: 33	636	vbc.exe
Token: 34	636	vbc.exe
Token: 35	636	vbc.exe
Token: 36	636	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

636 vbc.exe

pid	process
636	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe

description	pid	process	target process
PID 736 wrote to memory of 3080	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	tmpDC7A.tmp.exe
PID 736 wrote to memory of 3080	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	tmpDC7A.tmp.exe
PID 736 wrote to memory of 3080	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	tmpDC7A.tmp.exe
PID 736 wrote to memory of 5044	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	tmpDC7A.tmp.exe
PID 736 wrote to memory of 5044	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	tmpDC7A.tmp.exe
PID 736 wrote to memory of 5044	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	tmpDC7A.tmp.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe
PID 736 wrote to memory of 636	736	add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe
"C:\Users\Admin\AppData\Local\Temp\add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:736

C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe" -p
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:3080

C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe" -p
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:5044

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\\vbc.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:636

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\tmpDC7A.tmp.exe.log
Filesize
217B

MD5
594f9a7c2c9174efbb2099b6b21ca0c1

SHA1
859abbb672399e195267d2ebd57395ae9153dcd0

SHA256
3f56509adf13b45203567538dcd316e5217122182ff5b051da5ea2edc6bbc9a7

SHA512
13680a4fb1d115efb80d1fc2888420c48af6429360b6d14d77a60ed57d15c29233f424955e4b840a131d40881507b1465beeac1aa258b6ca20d311a668240b7d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe
Filesize
609KB

MD5
acd56cef01889b7ff2b8b1f39cbcf3f5

SHA1
683cfb3d1096845a611737ba331dc97629696900

SHA256
add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece

SHA512
254b25a4907582c6a9d7b562448b800376fdf490119d5972282b6f5b89f58ee3a5d6ecb70c83a663cf32e28a880da249a97212a5768dbec978b18b7338bb3744

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe
Filesize
609KB

MD5
acd56cef01889b7ff2b8b1f39cbcf3f5

SHA1
683cfb3d1096845a611737ba331dc97629696900

SHA256
add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece

SHA512
254b25a4907582c6a9d7b562448b800376fdf490119d5972282b6f5b89f58ee3a5d6ecb70c83a663cf32e28a880da249a97212a5768dbec978b18b7338bb3744

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDC7A.tmp.exe
Filesize
609KB

MD5
acd56cef01889b7ff2b8b1f39cbcf3f5

SHA1
683cfb3d1096845a611737ba331dc97629696900

SHA256
add5258839eba2f2e7a3f1c3378eacd734b52b7919c5c04fadd6e1ce41934ece

SHA512
254b25a4907582c6a9d7b562448b800376fdf490119d5972282b6f5b89f58ee3a5d6ecb70c83a663cf32e28a880da249a97212a5768dbec978b18b7338bb3744

Download Submit
memory/636-143-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/636-141-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/636-140-0x0000000000000000-mapping.dmp

Download
memory/636-142-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/636-145-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/636-147-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/736-132-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/736-146-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3080-136-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download
memory/3080-133-0x0000000000000000-mapping.dmp

Download
memory/5044-137-0x0000000000000000-mapping.dmp

Download
memory/5044-144-0x0000000075360000-0x0000000075911000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads