e443fc596e951b82a800ebebf6d8ceb73c8ebd49d79e27891e7fe0e03d9eae59

Analysis

max time kernel
88s
max time network
17s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 14:29

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General

Target

Builder.pyc
Size

261KB
MD5

88e7c431909e81ba2277549fc723c330
SHA1

cb56b68d13499c3918892f4edfbe3dfaa4de68d0
SHA256

8a8c154099668d750b23d09c398594572501382ac28c1605d164f7b745dbf499
SHA512

3fc3b4a9d7ceab2b4fd8855c5b05fe9df3add797ef3fa9b44e0c7ff03162358cfd1ce356e352f7cb4a89099b3bfd6f58103b53656b856daef5d5a4aeb03dcd31
SSDEEP

3072:6zDI4ykuQA8BnPZ05DTvtIM/zQ8J7sdd3:ixykuL8BnPW5nFIMrQ8Jwdp

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-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2904	AcroRd32.exe
2904	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 2688	2944	cmd.exe	29
PID 2944 wrote to memory of 2688	2944	cmd.exe	29
PID 2944 wrote to memory of 2688	2944	cmd.exe	29
PID 2688 wrote to memory of 2904	2688	rundll32.exe	30
PID 2688 wrote to memory of 2904	2688	rundll32.exe	30
PID 2688 wrote to memory of 2904	2688	rundll32.exe	30
PID 2688 wrote to memory of 2904	2688	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Builder.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Builder.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2688
- - 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\Builder.pyc"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2904

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
cad7c438c2ca97ad198a4d0de41450a5

SHA1
039d5518715285b72dcd0490f21042ca3ca931bb

SHA256
8ff8d85ab087d2a01e99e4366c97c021b3f2683112aec7673d5265ff44836150

SHA512
66643f4f20da46d268b3f1425bed73b72e8eed74ba8114f566c3ee28180c5d140413e32389cc353c48f83c56c956e9c5a2d71dc52f9e11721d53d42e49405372

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