darkcomet | 0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3

Analysis

max time kernel
153s
max time network
186s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2022, 09:20

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General

Target
0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Size 424KB
Sample221011-lavf1afge5
SHA256 0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3
MD5 6d280f7244c4e44953faa8441ee43c00
SHA1 728b8549229046190da4888d76333ec59fe02d1d
SHA512 7bdd319c840199dfb20703497e852bab2cefce875ee2ad0aa265192c73c0bbf0b96b217dba0a1e308226471a336d7abe9a3af375cc011a676a092a192d96b99d
SSDEEP 6144:ScNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37b9Xv7JHqQGt8U:ScW7KEZlPzCy37BXN4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

tonytony11.no-ip.org:1604

Mutex

DC_MUTEX-V53C7NX

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
vSaspT4tAJHM
install
true
offline_keylogger
true
persistence
true
reg_key
Windows.exe

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

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"	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe

Executes dropped EXE 1 IoCs

pid	Process
3232	msdcsc.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1660-132-0x0000000000400000-0x000000000050E000-memory.dmp	upx
behavioral2/memory/1660-134-0x0000000000400000-0x000000000050E000-memory.dmp	upx
behavioral2/files/0x0007000000022e6b-136.dat	upx
behavioral2/files/0x0007000000022e6b-137.dat	upx
behavioral2/memory/3232-138-0x0000000000400000-0x000000000050E000-memory.dmp	upx
behavioral2/memory/3232-139-0x0000000000400000-0x000000000050E000-memory.dmp	upx

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows.exe = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows.exe = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeSecurityPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeTakeOwnershipPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeLoadDriverPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeSystemProfilePrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeSystemtimePrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeProfSingleProcessPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeIncBasePriorityPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeCreatePagefilePrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeBackupPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeRestorePrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeShutdownPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeDebugPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeSystemEnvironmentPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeChangeNotifyPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeRemoteShutdownPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeUndockPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeManageVolumePrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeImpersonatePrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeCreateGlobalPrivilege	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: 33	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: 34	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: 35	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: 36	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
Token: SeIncreaseQuotaPrivilege	3232	msdcsc.exe
Token: SeSecurityPrivilege	3232	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3232	msdcsc.exe
Token: SeLoadDriverPrivilege	3232	msdcsc.exe
Token: SeSystemProfilePrivilege	3232	msdcsc.exe
Token: SeSystemtimePrivilege	3232	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3232	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3232	msdcsc.exe
Token: SeCreatePagefilePrivilege	3232	msdcsc.exe
Token: SeBackupPrivilege	3232	msdcsc.exe
Token: SeRestorePrivilege	3232	msdcsc.exe
Token: SeShutdownPrivilege	3232	msdcsc.exe
Token: SeDebugPrivilege	3232	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3232	msdcsc.exe
Token: SeChangeNotifyPrivilege	3232	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3232	msdcsc.exe
Token: SeUndockPrivilege	3232	msdcsc.exe
Token: SeManageVolumePrivilege	3232	msdcsc.exe
Token: SeImpersonatePrivilege	3232	msdcsc.exe
Token: SeCreateGlobalPrivilege	3232	msdcsc.exe
Token: 33	3232	msdcsc.exe
Token: 34	3232	msdcsc.exe
Token: 35	3232	msdcsc.exe
Token: 36	3232	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3232	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 4724	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	82
PID 1660 wrote to memory of 3232	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	83
PID 1660 wrote to memory of 3232	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	83
PID 1660 wrote to memory of 3232	1660	0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe	83

C:\Users\Admin\AppData\Local\Temp\0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe
"C:\Users\Admin\AppData\Local\Temp\0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  PID:4724
- C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
  "C:\Windows\system32\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3232

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Size 424KB
SHA256 0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3
MD5 6d280f7244c4e44953faa8441ee43c00
SHA1 728b8549229046190da4888d76333ec59fe02d1d
SHA512 7bdd319c840199dfb20703497e852bab2cefce875ee2ad0aa265192c73c0bbf0b96b217dba0a1e308226471a336d7abe9a3af375cc011a676a092a192d96b99d
SSDEEP 6144:ScNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37b9Xv7JHqQGt8U:ScW7KEZlPzCy37BXN4
MD5 SHA1 SHA512 SSDEEP

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msdcsc.exe

Path C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Size 424KB
SHA256 0ae77ca6b52c2577d51bba8862dcc92677a1ad07ed4ec4a8357583f5a1ee84f3
MD5 6d280f7244c4e44953faa8441ee43c00
SHA1 728b8549229046190da4888d76333ec59fe02d1d
SHA512 7bdd319c840199dfb20703497e852bab2cefce875ee2ad0aa265192c73c0bbf0b96b217dba0a1e308226471a336d7abe9a3af375cc011a676a092a192d96b99d
SSDEEP 6144:ScNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37b9Xv7JHqQGt8U:ScW7KEZlPzCy37BXN4
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1660-132-0x0000000000400000-0x000000000050E000-memory.dmp

Download

memory/1660-134-0x0000000000400000-0x000000000050E000-memory.dmp

Download

memory/3232-138-0x0000000000400000-0x000000000050E000-memory.dmp

Download

memory/3232-139-0x0000000000400000-0x000000000050E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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