darkcomet | 09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565

Analysis

max time kernel
40s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/10/2022, 23:37

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General

Target

09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe
Size

708KB
MD5

a136f80eebdb57bdebe406825c86d750
SHA1

83540c8b382854b67530efdca9bf46d649a8dc36
SHA256

09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565
SHA512

0cb287b3b5b7a7e086510d8d134fb8d497174f2f542a59e91cd63d77c6220b5be189774f8e1cbb5b7e7dc3a3635911182a435da263ee6910f1933a3791715589
SSDEEP

12288:wSS2Zdio6T+hWjxyNRh4gGJzEW0YQmvelqx2RgZM1/vXkHiBl3M:w72ZdoTKWj8NR+gGaW0YRv9x2R3v0CB

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

mafiausax.no-ip.org:1333

Mutex

DC_MUTEX-0W6K1RW

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
KaiNiaKuj5AE
install
true
offline_keylogger
true
password
0123456789
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

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

Executes dropped EXE 2 IoCs

pid	Process
1728	explorer.exe
1488	msdcsc.exe

Loads dropped DLL 3 IoCs

pid	Process
1840	09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe
1840	09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe
2040	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingMicrosoft\\System\\Services\\18.exe"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\18.exe = "C:\\Users\\Admin\\AppData\\RoamingMicrosoft\\System\\Services\\18.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 2040	1728	explorer.exe	28

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	vbc.exe
File opened for modification	C:\Windows\MSDCSC\	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 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2040	vbc.exe
Token: SeSecurityPrivilege	2040	vbc.exe
Token: SeTakeOwnershipPrivilege	2040	vbc.exe
Token: SeLoadDriverPrivilege	2040	vbc.exe
Token: SeSystemProfilePrivilege	2040	vbc.exe
Token: SeSystemtimePrivilege	2040	vbc.exe
Token: SeProfSingleProcessPrivilege	2040	vbc.exe
Token: SeIncBasePriorityPrivilege	2040	vbc.exe
Token: SeCreatePagefilePrivilege	2040	vbc.exe
Token: SeBackupPrivilege	2040	vbc.exe
Token: SeRestorePrivilege	2040	vbc.exe
Token: SeShutdownPrivilege	2040	vbc.exe
Token: SeDebugPrivilege	2040	vbc.exe
Token: SeSystemEnvironmentPrivilege	2040	vbc.exe
Token: SeChangeNotifyPrivilege	2040	vbc.exe
Token: SeRemoteShutdownPrivilege	2040	vbc.exe
Token: SeUndockPrivilege	2040	vbc.exe
Token: SeManageVolumePrivilege	2040	vbc.exe
Token: SeImpersonatePrivilege	2040	vbc.exe
Token: SeCreateGlobalPrivilege	2040	vbc.exe
Token: 33	2040	vbc.exe
Token: 34	2040	vbc.exe
Token: 35	2040	vbc.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 1728	1840	09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe	27
PID 1840 wrote to memory of 1728	1840	09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe	27
PID 1840 wrote to memory of 1728	1840	09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe	27
PID 1840 wrote to memory of 1728	1840	09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe	27
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 1728 wrote to memory of 2040	1728	explorer.exe	28
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 828	2040	vbc.exe	29
PID 2040 wrote to memory of 1488	2040	vbc.exe	30
PID 2040 wrote to memory of 1488	2040	vbc.exe	30
PID 2040 wrote to memory of 1488	2040	vbc.exe	30
PID 2040 wrote to memory of 1488	2040	vbc.exe	30

C:\Users\Admin\AppData\Local\Temp\09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe
"C:\Users\Admin\AppData\Local\Temp\09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Users\Admin\AppData\Roaming\explorer.exe
  "C:\Users\Admin\AppData\Roaming\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    - Modifies WinLogon for persistence
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in Windows directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2040
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:828
  - - C:\Windows\MSDCSC\msdcsc.exe
      "C:\Windows\MSDCSC\msdcsc.exe"
      4⤵
      Executes dropped EXE
      PID:1488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
708KB

MD5
a136f80eebdb57bdebe406825c86d750

SHA1
83540c8b382854b67530efdca9bf46d649a8dc36

SHA256
09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565

SHA512
0cb287b3b5b7a7e086510d8d134fb8d497174f2f542a59e91cd63d77c6220b5be189774f8e1cbb5b7e7dc3a3635911182a435da263ee6910f1933a3791715589

Download Submit
C:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
708KB

MD5
a136f80eebdb57bdebe406825c86d750

SHA1
83540c8b382854b67530efdca9bf46d649a8dc36

SHA256
09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565

SHA512
0cb287b3b5b7a7e086510d8d134fb8d497174f2f542a59e91cd63d77c6220b5be189774f8e1cbb5b7e7dc3a3635911182a435da263ee6910f1933a3791715589

Download Submit
C:\Windows\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Windows\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Users\Admin\AppData\Roaming\explorer.exe

Filesize
708KB

MD5
a136f80eebdb57bdebe406825c86d750

SHA1
83540c8b382854b67530efdca9bf46d649a8dc36

SHA256
09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565

SHA512
0cb287b3b5b7a7e086510d8d134fb8d497174f2f542a59e91cd63d77c6220b5be189774f8e1cbb5b7e7dc3a3635911182a435da263ee6910f1933a3791715589

Download Submit
\Users\Admin\AppData\Roaming\explorer.exe

Filesize
708KB

MD5
a136f80eebdb57bdebe406825c86d750

SHA1
83540c8b382854b67530efdca9bf46d649a8dc36

SHA256
09f78205549095fa583201ea63d81cd5c8f2a7c65ff620c8dd251849d7093565

SHA512
0cb287b3b5b7a7e086510d8d134fb8d497174f2f542a59e91cd63d77c6220b5be189774f8e1cbb5b7e7dc3a3635911182a435da263ee6910f1933a3791715589

Download Submit
\Windows\MSDCSC\msdcsc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/1728-74-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1728-80-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1840-55-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1840-62-0x0000000074EA0000-0x000000007544B000-memory.dmp

Filesize
5.7MB

Download
memory/1840-54-0x0000000076401000-0x0000000076403000-memory.dmp

Filesize
8KB

Download
memory/2040-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-81-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-83-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2040-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads