86fd3e10f53379c41b740e719998bfdbeae563003b807009d44fb27f9b8aea6f

Analysis

max time kernel
122s
max time network
141s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30-12-2023 03:35

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General

Target

BepInEx/cache/harmony_interop_cache.dat
Size

1KB
MD5

553a390a443dc8490a885c59244e9af3
SHA1

d1e51db78a168e0b844fb6b3dcbdac920fa6ee0e
SHA256

b9f80e5530617ac0710d030653ecf2c63da26b20c2169c4b9c883683a204ace1
SHA512

f9f27c683afd1273a295b8154df0a7e6f8ac94a4b4da5627b63517705dc6cab41a3989bcb187a50f8e754d7c78b55ad9e1bf272bcc9c30f77d7731b427995bd8

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-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\dat_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.dat	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\dat_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2628	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2628	AcroRd32.exe
2628	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2748	2136	cmd.exe	29
PID 2136 wrote to memory of 2748	2136	cmd.exe	29
PID 2136 wrote to memory of 2748	2136	cmd.exe	29
PID 2748 wrote to memory of 2628	2748	rundll32.exe	30
PID 2748 wrote to memory of 2628	2748	rundll32.exe	30
PID 2748 wrote to memory of 2628	2748	rundll32.exe	30
PID 2748 wrote to memory of 2628	2748	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\BepInEx\cache\harmony_interop_cache.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\BepInEx\cache\harmony_interop_cache.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2748
- - 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\BepInEx\cache\harmony_interop_cache.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2628

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
afd4ba5171b37be1e43f6b7d1c76e6ce

SHA1
243c5d35ba273e62a5bada5da457e9631972f6d9

SHA256
b6afdd6c83c48bf5a907153735195b86bf49731ba0bee5721db97374d345efcc

SHA512
799a3103441eda5265edd3d4d38a176f8efd88307f9ef51a13437e23b814dc9ff34a7c80b9d74a8234b3d63b044068a92138168c91dad394d22e12f1c0b7fe66

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