darkcomet | eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7

General

Target

eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
Size

825KB
MD5

5a6b430cc8ebd6b4ea8aab5833a1cbdf
SHA1

99c87aecf5a7b5658fd1352dc97ad148a2545f2c
SHA256

eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7
SHA512

9ac2a08bf0983c570cc143b2b4f7f5db36c092a1159979063d3d9719eae3913c1b765eab242823008951f56cb4bc69edef2b46be894f3d35310ff6565ca58922
SSDEEP

24576:74nInLWoUHdj79beliFLfqd0c4ifqPHdvj5yL5j:MILWtHXFDvhHHdrkp

Score

10^/10

darkcomet 2 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

2

C2

127.0.0.1:1604

Mutex

DC_MUTEX-HPTFP88

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
A4rqb41NhVrE
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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	vbc.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4008 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

4628 attrib.exe
4328 attrib.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
4008	msdcsc.exe

pid	process
4628	attrib.exe
4328	attrib.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

Processes:

vbc.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe

description	pid	process	target process
PID 1944 set thread context of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe

Drops file in Windows directory 2 IoCs

Processes:

attrib.exeattrib.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

Modifies registry class 1 IoCs

Processes:

vbc.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ vbc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe

pid	process
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
Token: SeIncreaseQuotaPrivilege	1836	vbc.exe
Token: SeSecurityPrivilege	1836	vbc.exe
Token: SeTakeOwnershipPrivilege	1836	vbc.exe
Token: SeLoadDriverPrivilege	1836	vbc.exe
Token: SeSystemProfilePrivilege	1836	vbc.exe
Token: SeSystemtimePrivilege	1836	vbc.exe
Token: SeProfSingleProcessPrivilege	1836	vbc.exe
Token: SeIncBasePriorityPrivilege	1836	vbc.exe
Token: SeCreatePagefilePrivilege	1836	vbc.exe
Token: SeBackupPrivilege	1836	vbc.exe
Token: SeRestorePrivilege	1836	vbc.exe
Token: SeShutdownPrivilege	1836	vbc.exe
Token: SeDebugPrivilege	1836	vbc.exe
Token: SeSystemEnvironmentPrivilege	1836	vbc.exe
Token: SeChangeNotifyPrivilege	1836	vbc.exe
Token: SeRemoteShutdownPrivilege	1836	vbc.exe
Token: SeUndockPrivilege	1836	vbc.exe
Token: SeManageVolumePrivilege	1836	vbc.exe
Token: SeImpersonatePrivilege	1836	vbc.exe
Token: SeCreateGlobalPrivilege	1836	vbc.exe
Token: 33	1836	vbc.exe
Token: 34	1836	vbc.exe
Token: 35	1836	vbc.exe
Token: 36	1836	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1944 wrote to memory of 1836	1944	eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe	vbc.exe
PID 1836 wrote to memory of 5036	1836	vbc.exe	cmd.exe
PID 1836 wrote to memory of 5036	1836	vbc.exe	cmd.exe
PID 1836 wrote to memory of 5036	1836	vbc.exe	cmd.exe
PID 1836 wrote to memory of 4932	1836	vbc.exe	cmd.exe
PID 1836 wrote to memory of 4932	1836	vbc.exe	cmd.exe
PID 1836 wrote to memory of 4932	1836	vbc.exe	cmd.exe
PID 5036 wrote to memory of 4628	5036	cmd.exe	attrib.exe
PID 5036 wrote to memory of 4628	5036	cmd.exe	attrib.exe
PID 5036 wrote to memory of 4628	5036	cmd.exe	attrib.exe
PID 4932 wrote to memory of 4328	4932	cmd.exe	attrib.exe
PID 4932 wrote to memory of 4328	4932	cmd.exe	attrib.exe
PID 4932 wrote to memory of 4328	4932	cmd.exe	attrib.exe
PID 1836 wrote to memory of 4008	1836	vbc.exe	msdcsc.exe
PID 1836 wrote to memory of 4008	1836	vbc.exe	msdcsc.exe
PID 1836 wrote to memory of 4008	1836	vbc.exe	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4628 attrib.exe
4328 attrib.exe

pid	process
4628	attrib.exe
4328	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe
"C:\Users\Admin\AppData\Local\Temp\eac97654d08020adbfe753a3b202202b5c62589e34f2097cd71a8a8d8b14bda7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
2⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1836

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:5036

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:4628

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:4932

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:4328

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:4008

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1836-142-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1836-133-0x0000000000000000-mapping.dmp

Download
memory/1836-134-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1836-135-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1836-137-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1944-136-0x0000000075590000-0x0000000075B41000-memory.dmp

Filesize
5.7MB

Download
memory/1944-132-0x0000000075590000-0x0000000075B41000-memory.dmp

Filesize
5.7MB

Download
memory/4008-143-0x0000000000000000-mapping.dmp

Download
memory/4328-141-0x0000000000000000-mapping.dmp

Download
memory/4628-140-0x0000000000000000-mapping.dmp

Download
memory/4932-139-0x0000000000000000-mapping.dmp

Download
memory/5036-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads