8a33cc7af2cf926411f45236cb841d1b5ab667aabff7c85c102a0edb2baa2534

Analysis

max time kernel
102s
max time network
17s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23-07-2024 05:19

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General

Target

Ruler.IRule.pdb
Size

14KB
MD5

d84b377723309d096f03bd74dfe0d031
SHA1

db5087ca8b2767764fa2b14960e58893f4abce84
SHA256

61c0f79b5406b148896c26b13082502ed2aad9d338ad39f6fa5c8bca77b2c290
SHA512

b2726ad03470b192a6b53056a5ae5b54f50ea2c829b84c12abc16332677c4253d8a0d2431975afd159e66e08983c7fdfe06f238db115aea38c40186f690b73a9
SSDEEP

384:wlP+16GnaaZl/zxXkmGPcV3WkHXf+PA7enEUnayf8Oqlql9:4q/92PP9

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-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pdb_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pdb_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.pdb	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\pdb_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

3000 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

3000 AcroRd32.exe
3000 AcroRd32.exe

pid	process
3000	AcroRd32.exe

pid	process
3000	AcroRd32.exe
3000	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1892 wrote to memory of 2976	1892	cmd.exe	rundll32.exe
PID 1892 wrote to memory of 2976	1892	cmd.exe	rundll32.exe
PID 1892 wrote to memory of 2976	1892	cmd.exe	rundll32.exe
PID 2976 wrote to memory of 3000	2976	rundll32.exe	AcroRd32.exe
PID 2976 wrote to memory of 3000	2976	rundll32.exe	AcroRd32.exe
PID 2976 wrote to memory of 3000	2976	rundll32.exe	AcroRd32.exe
PID 2976 wrote to memory of 3000	2976	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Ruler.IRule.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:1892

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Ruler.IRule.pdb
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2976

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\Ruler.IRule.pdb"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:3000

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
4176e5f2358ce9fb4277ea8be80255e2

SHA1
eef8f875fdb46f788790024dcc7e4c2460c02767

SHA256
8335bb52702870b050e22078cc0b987fe2ed6ac9d01bc7a6d4c551134e742c1a

SHA512
8d7fc452a36de87295533fb73aefea8c768273ed5ff03efd4b9d12f127923eb145efe7e5f86e3bf68483fa804c54aeca53ff3db99176a7a2ff98339c3d911906

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