28102c603bd4672f3a68527a542c10706a0a8e1bd9ae10b278c04d63a99c05fe

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 23:30

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General

Target

2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe
Size

36KB
MD5

4430f18f0c76b535a24c9cfd3273eee5
SHA1

8252c3c212f74034bca50717caa9fe30b7a944b8
SHA256

28102c603bd4672f3a68527a542c10706a0a8e1bd9ae10b278c04d63a99c05fe
SHA512

3e29371a0d1b82accdf06696019a042a0474202319d3b1d679cd33ab6fa0635070997c2c310e251fd9160ae34b81576bfcdcdc4b18dba2508aa41bf02778d333
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/Dpk/:qDdFJy3QMOtEvwDpjjWMlU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1364-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000015b6f-11.dat	CryptoLocker_rule2
behavioral1/memory/1364-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2168-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1364-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000015b6f-11.dat	CryptoLocker_set1
behavioral1/memory/1364-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2168-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1364-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000015b6f-11.dat	UPX
behavioral1/memory/1364-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2168-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2168	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1364	2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1364-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000015b6f-11.dat	upx
behavioral1/memory/1364-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2168-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-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 1364 wrote to memory of 2168	1364	2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe	28
PID 1364 wrote to memory of 2168	1364	2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe	28
PID 1364 wrote to memory of 2168	1364	2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe	28
PID 1364 wrote to memory of 2168	1364	2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_4430f18f0c76b535a24c9cfd3273eee5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2168

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
36KB

MD5
cb5eb270fb9a5b25189819cc72398c90

SHA1
b3a797b1c5f47ab8f87bd814da02a46fc7ba191e

SHA256
9c3e83bd3ccdd5afae37a7ed19aeb5e2ae8282a48a971e4329ce0ab5fd28a76e

SHA512
af2bf68e6184f1e4fa7a53adcdca13adfc6df6a61cf43a4f453e901a2cac6b389248d77044ad2e7d3cde30ddf7c86981a2ae9f93f005732ec71f5469f9bbe0a2

Download Submit
memory/1364-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1364-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1364-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1364-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1364-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1364-16-0x0000000002AC0000-0x0000000002AD0000-memory.dmp

Filesize
64KB

Download
memory/2168-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2168-19-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download