darkcomet | e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33

Analysis

max time kernel
150s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 11:20

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General

Target

e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Size

349KB
MD5

9b76254653754c7c8d3666ee24578a9a
SHA1

56e043bedeb56619f6787faa855effbf461b5dac
SHA256

e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33
SHA512

5a16e06678e4c9a68a9729b7758349cf57610a6b7b5ffa7b1d0865651d9a4f7b702e1229c7f6080e0f63ced30b03dfca2767f6e7e438e27acb7900bc867937a0
SSDEEP

6144:ZcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37YfKMd9mjO5:ZcW7KEZlPzCy37aKMuk

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

belial.no-ip.org:1604

Mutex

DC_MUTEX-Z8Q50WZ

Attributes

InstallPath
msdcsc.exe
gencode
hXHEm8otYKKu
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

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.exe"	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
932	msdcsc.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000500000000b2d2-55.dat	upx
behavioral1/files/0x000500000000b2d2-56.dat	upx
behavioral1/files/0x000500000000b2d2-58.dat	upx
behavioral1/files/0x000500000000b2d2-60.dat	upx
behavioral1/memory/1064-61-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral1/memory/932-64-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral1/memory/932-65-0x0000000000400000-0x00000000004E8000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\msdcsc.exe"	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.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 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeSecurityPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeTakeOwnershipPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeLoadDriverPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeSystemProfilePrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeSystemtimePrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeProfSingleProcessPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeIncBasePriorityPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeCreatePagefilePrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeBackupPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeRestorePrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeShutdownPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeDebugPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeSystemEnvironmentPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeChangeNotifyPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeRemoteShutdownPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeUndockPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeManageVolumePrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeImpersonatePrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeCreateGlobalPrivilege	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: 33	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: 34	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: 35	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
Token: SeIncreaseQuotaPrivilege	932	msdcsc.exe
Token: SeSecurityPrivilege	932	msdcsc.exe
Token: SeTakeOwnershipPrivilege	932	msdcsc.exe
Token: SeLoadDriverPrivilege	932	msdcsc.exe
Token: SeSystemProfilePrivilege	932	msdcsc.exe
Token: SeSystemtimePrivilege	932	msdcsc.exe
Token: SeProfSingleProcessPrivilege	932	msdcsc.exe
Token: SeIncBasePriorityPrivilege	932	msdcsc.exe
Token: SeCreatePagefilePrivilege	932	msdcsc.exe
Token: SeBackupPrivilege	932	msdcsc.exe
Token: SeRestorePrivilege	932	msdcsc.exe
Token: SeShutdownPrivilege	932	msdcsc.exe
Token: SeDebugPrivilege	932	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	932	msdcsc.exe
Token: SeChangeNotifyPrivilege	932	msdcsc.exe
Token: SeRemoteShutdownPrivilege	932	msdcsc.exe
Token: SeUndockPrivilege	932	msdcsc.exe
Token: SeManageVolumePrivilege	932	msdcsc.exe
Token: SeImpersonatePrivilege	932	msdcsc.exe
Token: SeCreateGlobalPrivilege	932	msdcsc.exe
Token: 33	932	msdcsc.exe
Token: 34	932	msdcsc.exe
Token: 35	932	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
932	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 932	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe	27
PID 1064 wrote to memory of 932	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe	27
PID 1064 wrote to memory of 932	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe	27
PID 1064 wrote to memory of 932	1064	e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe	27

C:\Users\Admin\AppData\Local\Temp\e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe
"C:\Users\Admin\AppData\Local\Temp\e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Users\Admin\Documents\msdcsc.exe
  "C:\Users\Admin\Documents\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:932

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\msdcsc.exe

Filesize
349KB

MD5
9b76254653754c7c8d3666ee24578a9a

SHA1
56e043bedeb56619f6787faa855effbf461b5dac

SHA256
e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33

SHA512
5a16e06678e4c9a68a9729b7758349cf57610a6b7b5ffa7b1d0865651d9a4f7b702e1229c7f6080e0f63ced30b03dfca2767f6e7e438e27acb7900bc867937a0

Download Submit
C:\Users\Admin\Documents\msdcsc.exe

Filesize
349KB

MD5
9b76254653754c7c8d3666ee24578a9a

SHA1
56e043bedeb56619f6787faa855effbf461b5dac

SHA256
e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33

SHA512
5a16e06678e4c9a68a9729b7758349cf57610a6b7b5ffa7b1d0865651d9a4f7b702e1229c7f6080e0f63ced30b03dfca2767f6e7e438e27acb7900bc867937a0

Download Submit
\Users\Admin\Documents\msdcsc.exe

Filesize
349KB

MD5
9b76254653754c7c8d3666ee24578a9a

SHA1
56e043bedeb56619f6787faa855effbf461b5dac

SHA256
e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33

SHA512
5a16e06678e4c9a68a9729b7758349cf57610a6b7b5ffa7b1d0865651d9a4f7b702e1229c7f6080e0f63ced30b03dfca2767f6e7e438e27acb7900bc867937a0

Download Submit
\Users\Admin\Documents\msdcsc.exe

Filesize
349KB

MD5
9b76254653754c7c8d3666ee24578a9a

SHA1
56e043bedeb56619f6787faa855effbf461b5dac

SHA256
e3166c851d3b42c5795a022dbf4ac991032e2b84fb1376f4fad1c8da0b43af33

SHA512
5a16e06678e4c9a68a9729b7758349cf57610a6b7b5ffa7b1d0865651d9a4f7b702e1229c7f6080e0f63ced30b03dfca2767f6e7e438e27acb7900bc867937a0

Download Submit
memory/932-64-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/932-65-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1064-54-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

Filesize
8KB

Download
memory/1064-61-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1064-62-0x00000000033D0000-0x00000000034B8000-memory.dmp

Filesize
928KB

Download
memory/1064-63-0x00000000033D0000-0x00000000034B8000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads