b5ea3d9f3e6b2cbe15ab7258e3208091d80e4e2c5b3ccc82d1d94deaa029bd64

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03-05-2024 11:37

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General

Target

2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe
Size

51KB
MD5

adbaa2c112590737aa4c54ba1afb59f3
SHA1

111befb27847d27b1dedb784b808c617d518d910
SHA256

b5ea3d9f3e6b2cbe15ab7258e3208091d80e4e2c5b3ccc82d1d94deaa029bd64
SHA512

432eac9fac765acff8fdcfaabb7290ee62995a65da70ef89c9b491627e15472db0bdf999f8984f238a32f876412f1e3bc3a3a320e4eb2c9b610621e0eaa854a3
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfa:79mqyNhQMOtEvwDpjBxe8GGfa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2728-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012336-11.dat	CryptoLocker_rule2
behavioral1/memory/2728-13-0x00000000022E0000-0x00000000022EF000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2728-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2728-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000012336-11.dat	CryptoLocker_set1
behavioral1/memory/2728-13-0x00000000022E0000-0x00000000022EF000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2728-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2588	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2728	2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_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 2728 wrote to memory of 2588	2728	2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe	28
PID 2728 wrote to memory of 2588	2728	2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe	28
PID 2728 wrote to memory of 2588	2728	2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe	28
PID 2728 wrote to memory of 2588	2728	2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_adbaa2c112590737aa4c54ba1afb59f3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2588

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
51KB

MD5
a5466a6c67be0bd5aa0a6c440aaa2f6b

SHA1
6b50af159b57e89ac8d17ca23bb6c963f3af6c60

SHA256
ddd11c60eb44215f54965d66fa282e4715916672c4ef4509050f559de5f8b0a0

SHA512
4cd27a6ffcd208b13073f8a9386ea8fd9a89c88a3edafc72f170a5aba8ba96011c6119ca8a027e7e4b964a4e602ec142a8b01829b991709310c8158353ce2364

Download Submit
memory/2588-18-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2588-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2728-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2728-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2728-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2728-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2728-13-0x00000000022E0000-0x00000000022EF000-memory.dmp

Filesize
60KB

Download
memory/2728-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download