67c98b71b02c2063148469bb4078c2c605494005027d634926b3a0300d7badf2

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 08:35

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General

Target

2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe
Size

30KB
MD5

9be28af8e91f105c220ca92ee6a88177
SHA1

0f3f144310304ef3353fbe3d8dc7a5e48ad40f3b
SHA256

67c98b71b02c2063148469bb4078c2c605494005027d634926b3a0300d7badf2
SHA512

89a6347ea66089382555083f8ded3ddda195b8ad8a526ac8a052b63e80dbb1a08f2b8c6e6f53e47e91a9c610ca8541e8f1ea2bd863f8fd5948df2b6230e216ee
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tHU:q0zizzOSxMOtEvwDpj/arq0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012251-14.dat	CryptoLocker_rule2
behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012251-14.dat	UPX
behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2032	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2800	2024-02-03_9be28af8e91f105c220ca92ee6a88177_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 2800 wrote to memory of 2032	2800	2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe	28
PID 2800 wrote to memory of 2032	2800	2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe	28
PID 2800 wrote to memory of 2032	2800	2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe	28
PID 2800 wrote to memory of 2032	2800	2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_9be28af8e91f105c220ca92ee6a88177_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2800
- 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

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
30KB

MD5
5f3f67fc56ecb742bf7b6b9e7112a358

SHA1
fef5238a98227887baf64d4f9dde4b966612fdd7

SHA256
d54e58abf708e6dce3e9c4cad36882df0cd028cf1acd6a9adc44c940f20c8474

SHA512
744f1b1a6073f65fd589b44ea412b38eae3c4a53b7fdde9797f235dba786f35618e79dd2149025ec7d1b4b13d722313fd94ebc581a9fa04c06e715d630a5f45a

Download Submit
memory/2032-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2032-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2800-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2800-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2800-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download