darkcomet | 94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700

Analysis

max time kernel
132s
max time network
153s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
21/11/2022, 15:27

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General

Target

94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
Size

728KB
MD5

0933577445ee1111d57dd999cf983a00
SHA1

42f59acb869036f94bb4e3eb0807f98e36026718
SHA256

94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700
SHA512

a89505d683057dbaa3b51b200fa1334793dbfd6ed7d99fd99cbb1dc8bf5dec6d6d3a9f03d5e4f4c81c6ae370930c8ec3e9619b4c6af4bcddaae1685c745b6ec9
SSDEEP

12288:7iLERtSJj3culKz/LXzqCFeJ8eAQlfmO8hzrFsaCT6xwb2T99X//Mbt:71ij3cJzTXz/Ub8NYmxxTnX

Score

10^/10

darkcomet installs persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

installs

shine.redirectme.net:1604

Mutex

DCMIN_MUTEX-82NGH63

Attributes

gencode
6yJTM4P9wAcU
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Executes dropped EXE 2 IoCs

pid	Process
1428	firefox udate.exe
1144	firefox udate.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1732-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1732-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1732-64-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1732-67-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1732-68-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1732-71-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1732-114-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Loads dropped DLL 5 IoCs

pid	Process
1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe

Adds Run key to start application 2 TTPs 2 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	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox udate.exe = "C:\\Users\\Admin\\AppData\\Roaming\\temp\\firefox udate.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 1428 set thread context of 1144	1428	firefox udate.exe	32
PID 1428 set thread context of 1060	1428	firefox udate.exe	33

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	1060	svchost.exe
Token: SeSecurityPrivilege	1060	svchost.exe
Token: SeTakeOwnershipPrivilege	1060	svchost.exe
Token: SeLoadDriverPrivilege	1060	svchost.exe
Token: SeSystemProfilePrivilege	1060	svchost.exe
Token: SeSystemtimePrivilege	1060	svchost.exe
Token: SeProfSingleProcessPrivilege	1060	svchost.exe
Token: SeIncBasePriorityPrivilege	1060	svchost.exe
Token: SeCreatePagefilePrivilege	1060	svchost.exe
Token: SeBackupPrivilege	1060	svchost.exe
Token: SeRestorePrivilege	1060	svchost.exe
Token: SeShutdownPrivilege	1060	svchost.exe
Token: SeDebugPrivilege	1060	svchost.exe
Token: SeSystemEnvironmentPrivilege	1060	svchost.exe
Token: SeChangeNotifyPrivilege	1060	svchost.exe
Token: SeRemoteShutdownPrivilege	1060	svchost.exe
Token: SeUndockPrivilege	1060	svchost.exe
Token: SeManageVolumePrivilege	1060	svchost.exe
Token: SeImpersonatePrivilege	1060	svchost.exe
Token: SeCreateGlobalPrivilege	1060	svchost.exe
Token: 33	1060	svchost.exe
Token: 34	1060	svchost.exe
Token: 35	1060	svchost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
1428	firefox udate.exe
1060	svchost.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 2008 wrote to memory of 1732	2008	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	27
PID 1732 wrote to memory of 1332	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	28
PID 1732 wrote to memory of 1332	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	28
PID 1732 wrote to memory of 1332	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	28
PID 1732 wrote to memory of 1332	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	28
PID 1332 wrote to memory of 1088	1332	cmd.exe	30
PID 1332 wrote to memory of 1088	1332	cmd.exe	30
PID 1332 wrote to memory of 1088	1332	cmd.exe	30
PID 1332 wrote to memory of 1088	1332	cmd.exe	30
PID 1732 wrote to memory of 1428	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	31
PID 1732 wrote to memory of 1428	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	31
PID 1732 wrote to memory of 1428	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	31
PID 1732 wrote to memory of 1428	1732	94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe	31
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1144	1428	firefox udate.exe	32
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33
PID 1428 wrote to memory of 1060	1428	firefox udate.exe	33

C:\Users\Admin\AppData\Local\Temp\94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
"C:\Users\Admin\AppData\Local\Temp\94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe
  "C:\Users\Admin\AppData\Local\Temp\94b93c10c7fe4a27cadfb98ea8e197a368f29bfaa691b52a37b6c7e1af4a0700.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\SQUPX.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1332
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "firefox udate.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe" /f
      4⤵
      Adds Run key to start application
      PID:1088
- - C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe
    "C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1428
  - - C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe
      "C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe"
      4⤵
      Executes dropped EXE
      PID:1144
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Windows\system32\svchost.exe"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1060

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\SQUPX.bat

Filesize
157B

MD5
b03159f96ccac2ce831bdb56b8d4fa0f

SHA1
575391e3af00ffe0b31e5fafadb8b0d87609c94a

SHA256
c94041f2bd22f248f9bd175a089d9d8461af32add1fff5b8ce00816cce520d3c

SHA512
889199d3e641bfcc15b2be03781196736538e7407e03eaeba0393226efea09983be622858c8bbc6f17997358aa42cd71bb81c3b82387164a78205a553a899be4

Download Submit
C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
C:\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
\Users\Admin\AppData\Roaming\temp\firefox udate.exe

Filesize
728KB

MD5
c867b0f9ad1ad8e79cc2297422cec883

SHA1
8e7856ea89a9b0866d31aff31eda3ceda89c987f

SHA256
18e728b3c92f409b508d67490214189a1daf860f70706272582ba485335aff80

SHA512
7bbf5737653b7aea577a04e7a99aa20727caa6277805c72e810b72925371143d553b9652fafb80708589facd995882b05c2fc6d1a94b743b6eba969949e2f8e2

Download Submit
memory/1060-103-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-110-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-119-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-118-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-117-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-115-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-112-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-108-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-107-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-105-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-101-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-99-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1060-98-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1428-86-0x0000000002540000-0x00000000025F7000-memory.dmp

Filesize
732KB

Download
memory/1732-68-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-64-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-114-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-67-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-71-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1732-72-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/2008-56-0x0000000002860000-0x0000000002917000-memory.dmp

Filesize
732KB

Download