c402a99d83ece9505e1d2f760a679c2834bae662010f60fa28d02194cbd59e64

Analysis

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

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

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General

Target

2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe
Size

69KB
MD5

482271afc4d0acd35f41a1385b0b6256
SHA1

98beb3eeba57aafffcbeabdfc14bda2c5d47a0ca
SHA256

c402a99d83ece9505e1d2f760a679c2834bae662010f60fa28d02194cbd59e64
SHA512

cf0bd1e585653e7ae11b07be370cd1a9e623d09dede7456db9958ed31351cd01eb6e3b0272e74b051390fc15b686e37e7b1362702c94e634b0f8fe82f6c8bd8d
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUtbz:DW60sllyWOtEvwDpjwF85z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001233b-11.dat	CryptoLocker_rule2
behavioral1/memory/2148-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2756-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2148-13-0x0000000002980000-0x000000000298B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001233b-11.dat	CryptoLocker_set1
behavioral1/memory/2148-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2756-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2148-13-0x0000000002980000-0x000000000298B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2756	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2148	2024-02-03_482271afc4d0acd35f41a1385b0b6256_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 2148 wrote to memory of 2756	2148	2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe	28
PID 2148 wrote to memory of 2756	2148	2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe	28
PID 2148 wrote to memory of 2756	2148	2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe	28
PID 2148 wrote to memory of 2756	2148	2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_482271afc4d0acd35f41a1385b0b6256_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2756

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
69KB

MD5
25d2d47510588f17add43975d896efb8

SHA1
61985f28786ef79f638a517dc52b8ca9c11675b2

SHA256
c639a842b35ad55966a3fe84f0e1f040c897f5551e080af72a750483a5448609

SHA512
caef94c71cecbc4fbf64078edeabd752dfc1164d49c8d00e149a3768bb0f8aca35cb7682da0c438bbb9af888a06e4e4714d0dd0e804e895e531e198f88623600

Download Submit
memory/2148-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2148-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2148-2-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2148-3-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2148-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2148-13-0x0000000002980000-0x000000000298B000-memory.dmp

Filesize
44KB

Download
memory/2756-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2756-19-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2756-24-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download