594fc6920eaa06364ff7ffeb87be15ec81882030749759a872a6b9f17da75670

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21-05-2024 14:43

240521-r3mvhshd83 3

21-05-2024 14:40

21-05-2024 14:37

21-05-2024 14:34

21-05-2024 14:31

Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 14:31

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General

Target

Some Problems/Copy of dUSFylKQrlogfBU5f_I7CjK--hwf1aN_8N_wDrxr9YPaEQaHKv57DmmNHEuUVyPsvcfimnxWQXax7PSKhA==.c9r
Size

481KB
MD5

04478273cd3f47e921edf49e60cb849b
SHA1

8ab6091277b3ece7f9b28e687fe4e1c9c9f3d798
SHA256

4de4deea183f715c9ed983ec252572a017ce0395375eea69c2465770c10a3f9e
SHA512

8d0679804e164ba79cb94fb1ce5d2940faeab6d2574113fa2b477bd1aff1409b1391b41cc2894f30066840491d9dfd1f2bd8b28fde71e0c18f4f91466d707c46
SSDEEP

12288:h8JiaoRrRbq13Pcnwu0MPnFPmj+YykasHyoQa+D1N2U:SJKRFK3Pcnf0MdPmiYbgPaZU

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

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.c9r	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.c9r\ = "c9r_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2712 AcroRd32.exe
2712 AcroRd32.exe

pid	process
2712	AcroRd32.exe
2712	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2120 wrote to memory of 2760	2120	cmd.exe	rundll32.exe
PID 2120 wrote to memory of 2760	2120	cmd.exe	rundll32.exe
PID 2120 wrote to memory of 2760	2120	cmd.exe	rundll32.exe
PID 2760 wrote to memory of 2712	2760	rundll32.exe	AcroRd32.exe
PID 2760 wrote to memory of 2712	2760	rundll32.exe	AcroRd32.exe
PID 2760 wrote to memory of 2712	2760	rundll32.exe	AcroRd32.exe
PID 2760 wrote to memory of 2712	2760	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Some Problems\Copy of dUSFylKQrlogfBU5f_I7CjK--hwf1aN_8N_wDrxr9YPaEQaHKv57DmmNHEuUVyPsvcfimnxWQXax7PSKhA==.c9r"
1⤵
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Some Problems\Copy of dUSFylKQrlogfBU5f_I7CjK--hwf1aN_8N_wDrxr9YPaEQaHKv57DmmNHEuUVyPsvcfimnxWQXax7PSKhA==.c9r
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2760

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\Some Problems\Copy of dUSFylKQrlogfBU5f_I7CjK--hwf1aN_8N_wDrxr9YPaEQaHKv57DmmNHEuUVyPsvcfimnxWQXax7PSKhA==.c9r"
3⤵
- Suspicious use of SetWindowsHookEx
PID:2712

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
28be435252af9f5e0f1816cf08d9b5f3

SHA1
2185ec4f46815497a9d8928d6263b6bbdc024005

SHA256
7818f0d547a89ae199385dfb5c9ab0ffded2df28813728e73a03aeea07b91058

SHA512
b08295437e84c7417ab7db37e66c6add2795035028f99d9bf346b3f9a0159f499cf9148d8d2faafa67c44823d2adf3576fe9bab6e5b1fabb24b074ce4f79835d

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