81e17f7d3c6d6916e6f74968917f9c1d20128cfc5feceeb9d0ef9da4d51a68a9

General

Target

2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe
Size

70KB
MD5

9a0cee245b8474795eba8c0120f90c04
SHA1

7c6d2a75014def416316e809283ab2b59c7d3e66
SHA256

81e17f7d3c6d6916e6f74968917f9c1d20128cfc5feceeb9d0ef9da4d51a68a9
SHA512

3b1766426a8f7aa12979bf0206656b2b5ff132d218846dc73bc74a39b704b60c3929cfbc6ef084b38559f7d9f5b0793eaacfb5b6e8c8d55ac4d6aff36161f451
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal3H:1nK6a+qdOOtEvwDpj8H

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001224a-16.dat	CryptoLocker_rule2
behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001224a-16.dat	CryptoLocker_set1
behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp	UPX
behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000a00000001224a-16.dat	UPX
behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2032	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2288	2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000a00000001224a-16.dat	upx
behavioral1/memory/2032-27-0x0000000000500000-0x000000000050F311-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 2288 wrote to memory of 2032	2288	2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe	28
PID 2288 wrote to memory of 2032	2288	2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe	28
PID 2288 wrote to memory of 2032	2288	2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe	28
PID 2288 wrote to memory of 2032	2288	2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9a0cee245b8474795eba8c0120f90c04_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
70KB

MD5
6e9dde7e4c30f29927bea79745a1c369

SHA1
15ef2ad93442110d811a19cf701a8f1db39db32c

SHA256
02cc33289f45abefcf7c920826e9c5278933433fb6af2eb53f628005600fcbb3

SHA512
6c9cd3b55c42f8fa9e750b648a511b8167057c59d11b79fa1d366de92cf559ece9e8d8f028de16fedf92d23d3a5fc3efa68e45f9497b57440025749b7bdb3776

Download Submit
memory/2032-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2032-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2032-21-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2032-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2288-1-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2288-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2288-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2288-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2288-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2288-13-0x0000000001EF0000-0x0000000001F00000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing