c9fae6f26f96670a35f31281a143ba78e5381506ad5361dfa65992c6ca0ae990

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-02-2024 00:11

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General

Target

COBALT.pcap
Size

12.9MB
MD5

3f528a55175df8f7003e49ba7fc780a8
SHA1

3c9795880b096443342885808e68f601dbbc313b
SHA256

c9fae6f26f96670a35f31281a143ba78e5381506ad5361dfa65992c6ca0ae990
SHA512

0fb9f0a974c5ce39a8f5a6ec2559110950529d516a5215f464158711c678549e85774a4a641a8423e66ca0fc0d4829bfce221db912b6ad62e1418600a842e830
SSDEEP

196608:GZbgakpKeX5UdqYQd8XF0JY0EMv7aDMeDQLDSvT/2R:WgPxEMTaDaq2

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

Processes:

rundll32.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pcap_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pcap_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pcap_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pcap\ = "pcap_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pcap	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pcap_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pcap_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pcap_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid	Process
2768	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid	Process
2768	AcroRd32.exe
2768	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	Process	procid_target
PID 2252 wrote to memory of 2524	2252	cmd.exe	29
PID 2252 wrote to memory of 2524	2252	cmd.exe	29
PID 2252 wrote to memory of 2524	2252	cmd.exe	29
PID 2524 wrote to memory of 2768	2524	rundll32.exe	30
PID 2524 wrote to memory of 2768	2524	rundll32.exe	30
PID 2524 wrote to memory of 2768	2524	rundll32.exe	30
PID 2524 wrote to memory of 2768	2524	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\COBALT.pcap
1⤵
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\COBALT.pcap
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\COBALT.pcap"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
e1afb3a69303e9fdd7a64a0728fec728

SHA1
c08da27e67d89311ca31d3820da0d8568f2a86bb

SHA256
ee54950081ec25929a293e24bb1005de01bb9f71312b764cf0db583edcbd5854

SHA512
1a8e7dc535e941662a45ffe7d969575237c2c433919a253261bb7a2560aa8704f0b2c67ac5d43053bf620232b550ce73d551bd091ccf92f31c3baef43ceb50cc

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