darkcomet | f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565

General

Target

f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe
Size

965KB
MD5

d48e65382aa5038a7b5006635b32b951
SHA1

69462a33f4c19711386f07ea3fb0cbe0d9a697cd
SHA256

f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565
SHA512

591b21d638a2591ba1c60165f2207e47fd5c52d681c984edb5e705ebf9b2bd7565e94309f8899473b2f3b028236304a5fdd41223c4d9145314d72b048bdbae10
SSDEEP

24576:QjanCAfUaJYNo5/XOqoa4Q+f1mIMVlzGqLD6h2Zg3:Qj2CNBHClLDOb

Score

10^/10

darkcomet mohamad persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

mohamad

C2

monasara4.no-ip.org:1604

Mutex

DC_MUTEX-W41GGVQ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
PTslBCtLGc65
install
true
offline_keylogger
true
persistence
false
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 1 IoCs

Processes:

msdcsc.exe

pid process

2276 msdcsc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
2276	msdcsc.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

Drops file in System32 directory 2 IoCs

Processes:

f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe

description	ioc	process
File created	C:\Windows\SysWOW64\authctl.exe	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe
File opened for modification	C:\Windows\SysWOW64\authctl.exe	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe

description	pid	process	target process
PID 3940 set thread context of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe

Drops file in Windows directory 1 IoCs

Processes:

dw20.exe

description ioc process

File created C:\Windows\AppCompat\Programs\Amcache.hve.tmp dw20.exe

description	ioc	process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.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 use of AdjustPrivilegeToken 29 IoCs

Processes:

dw20.exevbc.exe

description	pid	process
Token: SeRestorePrivilege	4004	dw20.exe
Token: SeBackupPrivilege	4004	dw20.exe
Token: SeBackupPrivilege	4004	dw20.exe
Token: SeBackupPrivilege	4004	dw20.exe
Token: SeIncreaseQuotaPrivilege	2684	vbc.exe
Token: SeSecurityPrivilege	2684	vbc.exe
Token: SeTakeOwnershipPrivilege	2684	vbc.exe
Token: SeLoadDriverPrivilege	2684	vbc.exe
Token: SeSystemProfilePrivilege	2684	vbc.exe
Token: SeSystemtimePrivilege	2684	vbc.exe
Token: SeProfSingleProcessPrivilege	2684	vbc.exe
Token: SeIncBasePriorityPrivilege	2684	vbc.exe
Token: SeCreatePagefilePrivilege	2684	vbc.exe
Token: SeBackupPrivilege	2684	vbc.exe
Token: SeRestorePrivilege	2684	vbc.exe
Token: SeShutdownPrivilege	2684	vbc.exe
Token: SeDebugPrivilege	2684	vbc.exe
Token: SeBackupPrivilege	4004	dw20.exe
Token: SeSystemEnvironmentPrivilege	2684	vbc.exe
Token: SeChangeNotifyPrivilege	2684	vbc.exe
Token: SeRemoteShutdownPrivilege	2684	vbc.exe
Token: SeUndockPrivilege	2684	vbc.exe
Token: SeManageVolumePrivilege	2684	vbc.exe
Token: SeImpersonatePrivilege	2684	vbc.exe
Token: SeCreateGlobalPrivilege	2684	vbc.exe
Token: 33	2684	vbc.exe
Token: 34	2684	vbc.exe
Token: 35	2684	vbc.exe
Token: 36	2684	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exevbc.exe

description	pid	process	target process
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 2684	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	vbc.exe
PID 3940 wrote to memory of 4004	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	dw20.exe
PID 3940 wrote to memory of 4004	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	dw20.exe
PID 3940 wrote to memory of 4004	3940	f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe	dw20.exe
PID 2684 wrote to memory of 2276	2684	vbc.exe	msdcsc.exe
PID 2684 wrote to memory of 2276	2684	vbc.exe	msdcsc.exe
PID 2684 wrote to memory of 2276	2684	vbc.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe
"C:\Users\Admin\AppData\Local\Temp\f34ecc9a2b4cc433afae06d4e6dee9cf9b30c78b2349ac190855c3b79de8d565.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3940

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
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2684

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:2276

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 1028
2⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4004

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Scripting

1

T1064

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

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/2276-140-0x0000000000000000-mapping.dmp

Download
memory/2684-133-0x0000000000000000-mapping.dmp

Download
memory/2684-134-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2684-135-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2684-136-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2684-138-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2684-143-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3940-132-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/3940-139-0x00000000748F0000-0x0000000074EA1000-memory.dmp

Filesize
5.7MB

Download
memory/4004-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads