2fa858947f7ce07d51213daa92772847f7ef421db7b3e6503a8ad5366ef86fce

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13-02-2024 02:39

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General

Target

ubuntu-archive-keyring.gpg 2.sig
Size

11KB
MD5

99d0813d58f8e43532c7757b02cebe69
SHA1

a66cbfc3faaa1757e6c2c47ff813d7fd84c2f1fb
SHA256

2fa858947f7ce07d51213daa92772847f7ef421db7b3e6503a8ad5366ef86fce
SHA512

35674fe4f0fccd0830045702bac4386484911442943cdc6e84188b7c1f119b9150899cda01c50cbc96c472001c02ce07cce88c883ff570059346a167078a7a72
SSDEEP

192:vRpynyeZJUHT46SwlAPHEUWX9Eogj1Dc96pTnWtSpZWXmgvu23vp03SQ79CLsyg7:vPUU06Swl4BC9EogDcgNW07WtvuSu79x

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\sig_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\sig_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\sig_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\.sig	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\.sig\ = "sig_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\sig_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\sig_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000_CLASSES\sig_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2724	AcroRd32.exe
2724	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2100	2932	cmd.exe	29
PID 2932 wrote to memory of 2100	2932	cmd.exe	29
PID 2932 wrote to memory of 2100	2932	cmd.exe	29
PID 2100 wrote to memory of 2724	2100	rundll32.exe	30
PID 2100 wrote to memory of 2724	2100	rundll32.exe	30
PID 2100 wrote to memory of 2724	2100	rundll32.exe	30
PID 2100 wrote to memory of 2724	2100	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\ubuntu-archive-keyring.gpg 2.sig"
1⤵
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\ubuntu-archive-keyring.gpg 2.sig
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2100
- - 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\ubuntu-archive-keyring.gpg 2.sig"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2724

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
05029744c06e39fbead7a69e2cc0a7a5

SHA1
e7e824fde4d3855f3b34279c5920be84cfdf925d

SHA256
216a51e733220948eaa825d364ae2a26b65f29cc6d00a2d0efa7dffa828f066a

SHA512
67797490325e776698bf8dc7ee52a34e49fd96b741778f45f45582e4e5b81234928c663e7e74326f87e464df44b935a3cb7d3301669e3df51621e296a1bfdc28

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