77988079586e63d0c0a46d254edc8df0ecc5151c03e4968f2fa54aeec53667d9

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
27/04/2024, 07:51

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General

Target

2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe
Size

39KB
MD5

fe534e0a6954830d60b9a7924620514f
SHA1

b839dd0d6e1ead6fc809d6df1a857b34d9699786
SHA256

77988079586e63d0c0a46d254edc8df0ecc5151c03e4968f2fa54aeec53667d9
SHA512

3941b1643500c6fb27093708840f33c731bfc28c88e905b0abd9846dec639d10f943358d0990a22f72a04219966a0b326b1392bedb37745f1feaf92dc2c9f277
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLp64:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2016-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013ab9-11.dat	CryptoLocker_rule2
behavioral1/memory/2936-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2016-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2016-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000013ab9-11.dat	CryptoLocker_set1
behavioral1/memory/2936-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2016-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2936	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2016	2024-04-27_fe534e0a6954830d60b9a7924620514f_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 2016 wrote to memory of 2936	2016	2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe	28
PID 2016 wrote to memory of 2936	2016	2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe	28
PID 2016 wrote to memory of 2936	2016	2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe	28
PID 2016 wrote to memory of 2936	2016	2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_fe534e0a6954830d60b9a7924620514f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2936

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
39KB

MD5
dc25b0cfa9a22fb148e1e342e0752948

SHA1
c09995a7a034a57b3c64ba4bb360ab683be563d9

SHA256
80139b9a11f75912f4574845c147f7045628df6ce8472209ae3206dbaaf013d9

SHA512
f7e42e19bc8b340c5169f4f24cd2a7644c745bcf5dc4d8d079f56dbb0a8a00ffcdf9a34296cb0a54cadc26c0a3ec738b65fb0dd2ca100c2a27389c5a0716e8a7

Download Submit
memory/2016-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2016-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2016-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2016-7-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2016-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2936-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2936-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2936-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download