1cbdbc2553018d5afbfe7dc7755f54462660a48c6774389e3ee899ead9926f1e

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 10:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

com/appsflyer/oaid/R$integer.class
Size

488B
MD5

da5fe839b4f06cd01e0486a492b652bf
SHA1

de06f39b50fe4add9720e1af7d697b19d0f7bd99
SHA256

197c45d1d010948002d2372120961833a3c94ce63a82c0e08df6bd17b75b1871
SHA512

85a27fa313a352dfae9b26966e93bd618f831b1df9c009879ce1ca9db61502d0d03cf89e4e059d2c7392fe873f03d6f4fdcf4bd8fb33fb978496f9b5dff05a53

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\class_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\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\class_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2756	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2756	AcroRd32.exe
2756	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2292	2264	cmd.exe	29
PID 2264 wrote to memory of 2292	2264	cmd.exe	29
PID 2264 wrote to memory of 2292	2264	cmd.exe	29
PID 2292 wrote to memory of 2756	2292	rundll32.exe	30
PID 2292 wrote to memory of 2756	2292	rundll32.exe	30
PID 2292 wrote to memory of 2756	2292	rundll32.exe	30
PID 2292 wrote to memory of 2756	2292	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\com\appsflyer\oaid\R$integer.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\com\appsflyer\oaid\R$integer.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2292
- - 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\com\appsflyer\oaid\R$integer.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2756

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

Loading Replay Monitor...

Downloads

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

Filesize
3KB

MD5
75fe3dc5793178f6af78557510692f13

SHA1
79909af6ef52ebb84f75b425d0152e378ce58ee4

SHA256
5cca32a94a494ea270ba98c97a99c6e4195d064b4b5d5410302786226b9c14d1

SHA512
d595aa618b4b4a62fa664a97f570e16bd5cfbf56ab3fa3f99f85fab3d589425cf97f4c6fde6ab96c0f3995e51f571b5f4ed11e81c39730ced74900aeb019f4dd

Download Submit