darkcomet | c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e

Analysis

max time kernel
149s
max time network
178s
platform
windows7_x64
resource
win7v20210408
submitted
15-05-2021 04:38

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General

Target

c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
Size

1.9MB
MD5

bfff1c43fa84308b29894cfc0e4e3c8b
SHA1

cb7997b5749bc85627ccbb1ba8c168b437555e63
SHA256

c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e
SHA512

0a9d24f1a0918f1d2b90e184302a1637938d378bf8f35519d06aebb62d52de676ab9758c94a5651d74bbf6670ffceed4c22dcea001123e4e5b2ee07aa695a315

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Executes dropped EXE 3 IoCs

Processes:

test.exetest.exetest.exe

pid process

1828 test.exe
1016 test.exe
1612 test.exe

pid	process
1828	test.exe
1016	test.exe
1612	test.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1684-73-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1684-80-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1612-107-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1612-121-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 5 IoCs

Processes:

c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe

pid	process
1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\test\\test.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exetest.exe

description	pid	process	target process
PID 748 set thread context of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 1828 set thread context of 1016	1828	test.exe	test.exe
PID 1828 set thread context of 1612	1828	test.exe	test.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 64 IoCs

Processes:

test.exetest.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1612	test.exe
Token: SeSecurityPrivilege	1612	test.exe
Token: SeTakeOwnershipPrivilege	1612	test.exe
Token: SeLoadDriverPrivilege	1612	test.exe
Token: SeSystemProfilePrivilege	1612	test.exe
Token: SeSystemtimePrivilege	1612	test.exe
Token: SeProfSingleProcessPrivilege	1612	test.exe
Token: SeIncBasePriorityPrivilege	1612	test.exe
Token: SeCreatePagefilePrivilege	1612	test.exe
Token: SeBackupPrivilege	1612	test.exe
Token: SeRestorePrivilege	1612	test.exe
Token: SeShutdownPrivilege	1612	test.exe
Token: SeDebugPrivilege	1612	test.exe
Token: SeSystemEnvironmentPrivilege	1612	test.exe
Token: SeChangeNotifyPrivilege	1612	test.exe
Token: SeRemoteShutdownPrivilege	1612	test.exe
Token: SeUndockPrivilege	1612	test.exe
Token: SeManageVolumePrivilege	1612	test.exe
Token: SeImpersonatePrivilege	1612	test.exe
Token: SeCreateGlobalPrivilege	1612	test.exe
Token: 33	1612	test.exe
Token: 34	1612	test.exe
Token: 35	1612	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe
Token: SeDebugPrivilege	1016	test.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exec8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exetest.exetest.exe

pid	process
748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
1828	test.exe
1016	test.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exec8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.execmd.exetest.exe

description	pid	process	target process
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 748 wrote to memory of 1684	748	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
PID 1684 wrote to memory of 1580	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	cmd.exe
PID 1684 wrote to memory of 1580	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	cmd.exe
PID 1684 wrote to memory of 1580	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	cmd.exe
PID 1684 wrote to memory of 1580	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	cmd.exe
PID 1580 wrote to memory of 1100	1580	cmd.exe	reg.exe
PID 1580 wrote to memory of 1100	1580	cmd.exe	reg.exe
PID 1580 wrote to memory of 1100	1580	cmd.exe	reg.exe
PID 1580 wrote to memory of 1100	1580	cmd.exe	reg.exe
PID 1684 wrote to memory of 1828	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	test.exe
PID 1684 wrote to memory of 1828	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	test.exe
PID 1684 wrote to memory of 1828	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	test.exe
PID 1684 wrote to memory of 1828	1684	c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1016	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe
PID 1828 wrote to memory of 1612	1828	test.exe	test.exe

C:\Users\Admin\AppData\Local\Temp\c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
"C:\Users\Admin\AppData\Local\Temp\c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:748

C:\Users\Admin\AppData\Local\Temp\c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe
"C:\Users\Admin\AppData\Local\Temp\c8bf059ebf4161fe3a8edb1430389c89a09425089e5ccf2587d88ebb1ef5cb6e.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\CUMID.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\test\test.exe" /f
4⤵
- Adds Run key to start application
PID:1100

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1828

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1016

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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\Local\Temp\CUMID.bat
MD5
527683c48cc4c7190219814c77b72fe0

SHA1
d995878a8f4b9824a0508039eeada5376be9a52d

SHA256
bbebf3e66136e700d8e3e2e0c8f461cdd9d7e68fe5a18a235afe86344932fb4b

SHA512
408a53b240c23fa34153ccc2b2315f28a9741121ecc9b76d50267ee62d78230e65574327369f83c779c781802c0c28f6c578703c01a67de46c3d44f71b814fa6

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
238597c06f843952b439355d40946d6c

SHA1
4ade6d4246434aedbfd8094b97d53e484cdecfa8

SHA256
da2d7212019b8e978852f1ea93502be7a94216f16d5ab8edca10fc92a2ec64b6

SHA512
dae97c9125f2edf5af7f05878b4e28a21abf4e595a9e6fb2b6abee3eed97b8b20180efedc1c6c5431a10b3068b415c119460bf27cf381f1c4c651ae016dc9750

Download Submit
memory/748-72-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/748-63-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/748-62-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/748-77-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download
memory/748-79-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/748-78-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/748-65-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/748-66-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/748-67-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/748-70-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/748-68-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/748-59-0x0000000000400000-0x000000000054B000-memory.dmp

Filesize
1.3MB

Download
memory/748-71-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/748-69-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1016-105-0x00000000004085D0-mapping.dmp

Download
memory/1100-84-0x0000000000000000-mapping.dmp

Download
memory/1580-82-0x0000000000000000-mapping.dmp

Download
memory/1612-107-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1612-108-0x00000000004B5640-mapping.dmp

Download
memory/1612-122-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1612-121-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1684-81-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download
memory/1684-80-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

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memory/1684-73-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

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memory/1684-74-0x00000000004085D0-mapping.dmp

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memory/1828-90-0x0000000000000000-mapping.dmp

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