4d8daf45a5fcf7480739974e1d9ecac7370462f66196dd14b9a38020120dc202

Resubmissions

02/06/2024, 23:20

240602-3bvxlaag6v 7

02/06/2024, 23:16

240602-29dwasbg87 4

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
02/06/2024, 23:16

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General

Target

chrome_100_percent.pak
Size

132KB
MD5

443c58245eeb233d319abf7150b99c31
SHA1

f889ce6302bd8cfbb68ee9a6d8252e58b63e492d
SHA256

99ca6947d97df212e45782bbd5d97bfb42112872e1c42bab4209ceedf66dc760
SHA512

081f3ee4a5e40fdc8bb6f16f2cfd47edde2bd8f3b5349775526092a770b090c05308d4289ecdda3d541cf7f0579ac64b529930fd128edad9b0991dfa00b0e9bc
SSDEEP

3072:bKzwJCcIe4woKmWVlBL2o418Gb0+VRLf0ld0GY3cQ39Vm2I:bKzwjIe41KmWVlNK18Gb0OV8ld0GecQu

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-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2684	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2684	AcroRd32.exe
2684	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2536	2460	cmd.exe	29
PID 2460 wrote to memory of 2536	2460	cmd.exe	29
PID 2460 wrote to memory of 2536	2460	cmd.exe	29
PID 2536 wrote to memory of 2684	2536	rundll32.exe	30
PID 2536 wrote to memory of 2684	2536	rundll32.exe	30
PID 2536 wrote to memory of 2684	2536	rundll32.exe	30
PID 2536 wrote to memory of 2684	2536	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:2460
- 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:2536
- - 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:2684

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
8ee5c81bb7f02055e5c757b1b6fe7105

SHA1
fddc66fdc4062f5fc37c5a6ba50ec7549e4ebc30

SHA256
8999890f905163cfe5123b6e2d949b9c7a1ed1e051cd09d5a03603302e2ae556

SHA512
abf5143e833ce0e2fbb0f1cdb73bb99f679dcc53af20adb16e7e521fb3212b7de0e6852057ec16721e0bbcfd0b6d8c4e805fcd88da6974908bf7cf0a9107e708

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