darkcomet | c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5

General

Target

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
Size

1.1MB
MD5

87f31938ba32ffe17ff1bbe96e076421
SHA1

97487d29f1cf63559d87d31fc03c20b2b4e4a911
SHA256

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5
SHA512

8b23fd6549f998142f7a64e260736ae6293b84451ad73a80da3597ec482feccf27bebe2be32f2c89b711244a9f370d640114cae7d3d2104153205703006fffcf
SSDEEP

12288:pJIE4VW2o/LW0NHX68XU9sUX9T8+3M2UBvSwo9nKeK3wzuM/5Tdi77X9Z4YuL4:pSy/S0NPK1CWMTxkKeKAbdEX9Z4YuL4

Score

10^/10

darkcomet love evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Love

C2

pet105.no-ip.biz:100

Mutex

DC_MUTEX-TNT8SFG

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
JJbwi9MArQ9S
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Executes dropped EXE 2 IoCs

Processes:

vbc.exemsdcsc.exe

pid process

4632 vbc.exe
3836 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3136 attrib.exe
2668 attrib.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:

vbc.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
4632	vbc.exe
3836	msdcsc.exe

pid	process
3136	attrib.exe
2668	attrib.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	vbc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe

description	pid	process	target process
PID 4320 set thread context of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.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 24 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4632	vbc.exe
Token: SeSecurityPrivilege	4632	vbc.exe
Token: SeTakeOwnershipPrivilege	4632	vbc.exe
Token: SeLoadDriverPrivilege	4632	vbc.exe
Token: SeSystemProfilePrivilege	4632	vbc.exe
Token: SeSystemtimePrivilege	4632	vbc.exe
Token: SeProfSingleProcessPrivilege	4632	vbc.exe
Token: SeIncBasePriorityPrivilege	4632	vbc.exe
Token: SeCreatePagefilePrivilege	4632	vbc.exe
Token: SeBackupPrivilege	4632	vbc.exe
Token: SeRestorePrivilege	4632	vbc.exe
Token: SeShutdownPrivilege	4632	vbc.exe
Token: SeDebugPrivilege	4632	vbc.exe
Token: SeSystemEnvironmentPrivilege	4632	vbc.exe
Token: SeChangeNotifyPrivilege	4632	vbc.exe
Token: SeRemoteShutdownPrivilege	4632	vbc.exe
Token: SeUndockPrivilege	4632	vbc.exe
Token: SeManageVolumePrivilege	4632	vbc.exe
Token: SeImpersonatePrivilege	4632	vbc.exe
Token: SeCreateGlobalPrivilege	4632	vbc.exe
Token: 33	4632	vbc.exe
Token: 34	4632	vbc.exe
Token: 35	4632	vbc.exe
Token: 36	4632	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4320 wrote to memory of 4632	4320	c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe	vbc.exe
PID 4632 wrote to memory of 1500	4632	vbc.exe	cmd.exe
PID 4632 wrote to memory of 1500	4632	vbc.exe	cmd.exe
PID 4632 wrote to memory of 1500	4632	vbc.exe	cmd.exe
PID 4632 wrote to memory of 1724	4632	vbc.exe	cmd.exe
PID 4632 wrote to memory of 1724	4632	vbc.exe	cmd.exe
PID 4632 wrote to memory of 1724	4632	vbc.exe	cmd.exe
PID 1724 wrote to memory of 2668	1724	cmd.exe	attrib.exe
PID 1724 wrote to memory of 2668	1724	cmd.exe	attrib.exe
PID 1724 wrote to memory of 2668	1724	cmd.exe	attrib.exe
PID 1500 wrote to memory of 3136	1500	cmd.exe	attrib.exe
PID 1500 wrote to memory of 3136	1500	cmd.exe	attrib.exe
PID 1500 wrote to memory of 3136	1500	cmd.exe	attrib.exe
PID 4632 wrote to memory of 3836	4632	vbc.exe	msdcsc.exe
PID 4632 wrote to memory of 3836	4632	vbc.exe	msdcsc.exe
PID 4632 wrote to memory of 3836	4632	vbc.exe	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3136 attrib.exe
2668 attrib.exe

pid	process
3136	attrib.exe
2668	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe
"C:\Users\Admin\AppData\Local\Temp\c1e539ef1d5ae993fa4c9058f4e2e6caf14e61226b349b191cdfa37e65b710a5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4320

C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\\plugtemp\vbc.exe
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4632

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3136

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2668

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:3836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\plugtemp\vbc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1500-143-0x0000000000000000-mapping.dmp

Download
memory/1724-144-0x0000000000000000-mapping.dmp

Download
memory/2668-145-0x0000000000000000-mapping.dmp

Download
memory/3136-146-0x0000000000000000-mapping.dmp

Download
memory/3836-147-0x0000000000000000-mapping.dmp

Download
memory/4320-133-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/4320-132-0x0000000075440000-0x00000000759F1000-memory.dmp

Filesize
5.7MB

Download
memory/4632-138-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4632-142-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4632-141-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4632-139-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4632-135-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4632-134-0x0000000000000000-mapping.dmp

Download
memory/4632-150-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads