9f57d1263ac7b39cfd1cbcd6bcebd406590a52f00d66f68134c5794562412490

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 03:42

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General

Target

2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe
Size

38KB
MD5

3ad291f5ae2ab784fdabccb4f3d77a7f
SHA1

7534ac3f9ff44c550a30bcfd3be4c38f171dc997
SHA256

9f57d1263ac7b39cfd1cbcd6bcebd406590a52f00d66f68134c5794562412490
SHA512

830f734a9763a24264a9b476b793e16effc31cadaf860f583d2da9b8527e351a99679c17785fbe0a3c6786c9af61793365a4e08b3844927b0db972e12cfaf737
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY2:qDdFJy3QMOtEvwDpjjWMl7Tv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013ab9-11.dat	CryptoLocker_rule2
behavioral1/memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1948-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000013ab9-11.dat	CryptoLocker_set1
behavioral1/memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1948-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000013ab9-11.dat	UPX
behavioral1/memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1948-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1948	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2488	2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000013ab9-11.dat	upx
behavioral1/memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1948-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 1948	2488	2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe	28
PID 2488 wrote to memory of 1948	2488	2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe	28
PID 2488 wrote to memory of 1948	2488	2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe	28
PID 2488 wrote to memory of 1948	2488	2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3ad291f5ae2ab784fdabccb4f3d77a7f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1948

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
b6243e97756648246707904e065a9a86

SHA1
d73ee66d5591798b2ad68461f76f68c2b2f31d64

SHA256
1ef890177e25bffc0586fab566afadfff93ea29b7ec30050913f046c23d16661

SHA512
fb86e405bb0267be67cc8ef6dd5ed0623f83af942c52f26a62824f586980cc9bd7582bd327d35a3fa8a24b7d146d47a37855dc58d85330bf083e1bcf6e01e31e

Download Submit
memory/1948-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1948-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1948-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2488-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2488-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2488-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2488-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2488-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download