decbeada040f605e83f0b4df16aba94ced8762200a35d3e78ef7aedee49b37ad

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13-02-2024 22:01

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General

Target

chrome_200_percent.pak
Size

175KB
MD5

5604b67e3f03ab2741f910a250c91137
SHA1

a4bb15ac7914c22575f1051a29c448f215fe027f
SHA256

1408387e87cb5308530def6ce57bdc4e0abbbaa9e70f687fd6c3a02a56a0536c
SHA512

5e6f875068792e862b1fc8bb7b340ac0f1f4c51e53e50be81a5af8575ca3591f4e7eb9239890178b17c5a8ff4ebb23719190d7db0bd8a9aa6dcb4308ffa9a34d
SSDEEP

3072:+DQYaEQN6AJPRJL2myFhPNafR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+HxNK/r4:+DQYaNN68RwmU0gx5GMRejnbdZnVE6YR

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_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-1-5-21-3601492379-692465709-652514833-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2900	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2900	AcroRd32.exe
2900	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2800	2524	cmd.exe	26
PID 2524 wrote to memory of 2800	2524	cmd.exe	26
PID 2524 wrote to memory of 2800	2524	cmd.exe	26
PID 2800 wrote to memory of 2900	2800	rundll32.exe	30
PID 2800 wrote to memory of 2900	2800	rundll32.exe	30
PID 2800 wrote to memory of 2900	2800	rundll32.exe	30
PID 2800 wrote to memory of 2900	2800	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2800
- - 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_200_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2900

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
348c7a869367f331f515dde6f21951ef

SHA1
d7a06f5266afb7306d838517655cacafec92acb2

SHA256
de906471cdc80b62e4a71983df41f527765c4053513bb849cff5b215a87caab2

SHA512
c34a45db5f2d7322a18ec80d481d2fac42622f603343475ac54bf9a66897547a2302bcd8f3d26dbfee447fa86c86ad1d48cdc913c19a1a159c65358353bbd370

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