8937da958a37f36d36109da0a278f60c4d29cdc88b22f7eaa9fb4e39f8f30a01

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09-06-2024 05:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe
Size

69KB
MD5

4c495f106a7010e240ae020c9d82bb03
SHA1

23ce39cddea6111c3ceb8fc268d102fbc595948e
SHA256

8937da958a37f36d36109da0a278f60c4d29cdc88b22f7eaa9fb4e39f8f30a01
SHA512

1099279fd7b32d935509cd05e03d293bd2b47ff54f6d9a2a2d7b89b816a4e94cd64872feb0a5f710550814d295910eb0decc796d622cf31241415183efc2ff8a
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUj:DW60sllyWOtEvwDpjwF859

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2972-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001444f-11.dat	CryptoLocker_rule2
behavioral1/memory/2972-13-0x0000000001E10000-0x0000000001E1B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2972-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2972-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001444f-11.dat	CryptoLocker_set1
behavioral1/memory/2972-13-0x0000000001E10000-0x0000000001E1B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2972-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2540	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2972	2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe

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 2972 wrote to memory of 2540	2972	2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe	28
PID 2972 wrote to memory of 2540	2972	2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe	28
PID 2972 wrote to memory of 2540	2972	2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe	28
PID 2972 wrote to memory of 2540	2972	2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_4c495f106a7010e240ae020c9d82bb03_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2540

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

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

Filesize
69KB

MD5
b7a51c17467dbb938aef3dd85ea48f76

SHA1
99cb96085f46aa5a3d8bdb1c3aa29c3e1f16833c

SHA256
9bbb38624355f1e6480b0de04699482757ae4e4015691c9c0038cb90cd99709d

SHA512
6d58d46de3173af57d0df10bf11a38f6d55b1ac28aa2a8a5d10cf11460badeb09a63bf67a38ffb204fb69673634a4c01fffb4f0e68d6e4975d292670e78766b6

Download Submit
memory/2540-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2540-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2972-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2972-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2972-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2972-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2972-13-0x0000000001E10000-0x0000000001E1B000-memory.dmp

Filesize
44KB

Download
memory/2972-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download