088a9f665d0fdc9b2bb050ecd1524b1539010bbe1d9935f72343bb2bc5f98975

Analysis

max time kernel
117s
max time network
125s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29/04/2024, 18:10

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General

Target

chrome_100_percent.pak
Size

132KB
MD5

a0e681fdd4613e0fff6fb8bf33a00ef1
SHA1

6789bacfe0b244ab6872bd3acc1e92030276011e
SHA256

86f6b8ffa8788603a433d425a4bc3c4031e5d394762fd53257b0d4b1cfb2ffa2
SHA512

6f6a1a8bfe3d33f3fa5f6134dac7cd8c017e38e5e2a75a93a958addbb17a601c5707d99a2af67e52c0a3d5206142209703701cd3fab44e0323a4553caee86196
SSDEEP

3072:tezwJCGIekwf9W2bg3yhPaL2o418Gb0+VRLf0ld0GY3cQ3ERVm2I:tezw1Iek+42k3yMK18Gb0OV8ld0GecQJ

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.pak	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2640	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2640	AcroRd32.exe
2640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2116	1960	cmd.exe	29
PID 1960 wrote to memory of 2116	1960	cmd.exe	29
PID 1960 wrote to memory of 2116	1960	cmd.exe	29
PID 2116 wrote to memory of 2640	2116	rundll32.exe	30
PID 2116 wrote to memory of 2640	2116	rundll32.exe	30
PID 2116 wrote to memory of 2640	2116	rundll32.exe	30
PID 2116 wrote to memory of 2640	2116	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2116
- - 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\chrome_100_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2640

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
90b4ca270ec0a100fbb741fbe2d28cf7

SHA1
1e01d6dfb1ea759f39a1c2b1f62ea3e59907ec44

SHA256
68357f0ceea19dbb53e5a2f8251ea9141255915172ff0a91a7f38c74c59edda4

SHA512
30b1561d7236885fa11b2e96980d728d1efc45538aaee8e9a413b9331af3206aeee995ba7f8751db66ad3a93e3ae88b6407d10e92a550d25a9d7165618b4a292

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