48602a57904e3125fb42f5f7c3de1542735aed83562cdfe613fa394d788e32bc

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 23:23

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General

Target
locales/zh-CN.pak
Size 345KB
Sample240604-3dctsseh6x
SHA256 58b934a09858f037f1966a495e73d44416180afcdebfaefcee1f5e3377de63f7
MD5 9d4f54eb5a12cf4c2f34f5f538dff90b
SHA1 c31b892ce78c733bde0571b6236170103cc9fe7a
SHA512 46bf6099c50f7959a6f0800ec679b61a78efabe87985cad8dc0d7d0006470a9c61e659bde0258da6cf7ed6104749a157f5ad133f324479c3460a19fc14e31c37
SSDEEP 6144:ALU9jcaZx79+vKKS/+kTme5zBNCJ7AAmlv:nAaZ+vKKS/ye5zBNCJ7Y
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2676	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2676	AcroRd32.exe
2676	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 2980	2864	cmd.exe	29
PID 2864 wrote to memory of 2980	2864	cmd.exe	29
PID 2864 wrote to memory of 2980	2864	cmd.exe	29
PID 2980 wrote to memory of 2676	2980	rundll32.exe	30
PID 2980 wrote to memory of 2676	2980	rundll32.exe	30
PID 2980 wrote to memory of 2676	2980	rundll32.exe	30
PID 2980 wrote to memory of 2676	2980	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\zh-CN.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\zh-CN.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2980
- - 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\locales\zh-CN.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2676

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

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 469584d8863c9601739a5013bede100fc10743533272fb2f49af5dc4f0cf1952
MD5 1263603f63ee67eb45e9c561d2e4ec89
SHA1 ae12b6c34157319d46ea0e7fb20f51bbea023aee
SHA512 3a7ed0fb0178b7aa0fe5bbd0f19785149bfd1c264a3cac70a0ea5ad225c5e83a07cbd50767cc03d5de12f8130aed341e87535cfe74f3f5ef9cb58bc04196f842
MD5 SHA1 SHA512

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