cryptolocker | 9345dca87ef550116e235df4675ffd44110d5c6060c5bc0e100c1d1c279d5e8e

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/03/2024, 04:45

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General

Target
e83149488595683e0c78febb79881ed5.exe
Size 390KB
Sample240304-fdfjcsba44
SHA256 9345dca87ef550116e235df4675ffd44110d5c6060c5bc0e100c1d1c279d5e8e
MD5 e83149488595683e0c78febb79881ed5
SHA1 32d867c375c50d906c4a5d08f8bd96012548ecde
SHA512 12e16991a414d3eb4b1a961f18548b6dd0b052767b253b33a63f646b904a41940ad9cfeca7b9028e224e42be3cf1982ce21a0899e420717b84d31b4429e415ce
SSDEEP 6144:oWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCPD4SsSOg:oWkEuCaNT85I2vCMX5l+ZRv//G
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
5016	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
5016	{34184A33-0407-212E-3320-09040709E2C2}.exe
3244	{34184A33-0407-212E-3320-09040709E2C2}.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 5016	548	e83149488595683e0c78febb79881ed5.exe	94
PID 548 wrote to memory of 5016	548	e83149488595683e0c78febb79881ed5.exe	94
PID 548 wrote to memory of 5016	548	e83149488595683e0c78febb79881ed5.exe	94
PID 5016 wrote to memory of 3244	5016	{34184A33-0407-212E-3320-09040709E2C2}.exe	95
PID 5016 wrote to memory of 3244	5016	{34184A33-0407-212E-3320-09040709E2C2}.exe	95
PID 5016 wrote to memory of 3244	5016	{34184A33-0407-212E-3320-09040709E2C2}.exe	95

C:\Users\Admin\AppData\Local\Temp\e83149488595683e0c78febb79881ed5.exe
"C:\Users\Admin\AppData\Local\Temp\e83149488595683e0c78febb79881ed5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:548
- C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
  "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\e83149488595683e0c78febb79881ed5.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:5016
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w00000220
    3⤵
    - Executes dropped EXE
    PID:3244

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4172 --field-trial-handle=2588,i,14229658658073991926,6938034815163866135,262144 --variations-seed-version /prefetch:8
1⤵
PID:4092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

{34184A33-0407-212E-3320-09040709E2C2}.exe

Path C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Size 390KB
SHA256 9345dca87ef550116e235df4675ffd44110d5c6060c5bc0e100c1d1c279d5e8e
MD5 e83149488595683e0c78febb79881ed5
SHA1 32d867c375c50d906c4a5d08f8bd96012548ecde
SHA512 12e16991a414d3eb4b1a961f18548b6dd0b052767b253b33a63f646b904a41940ad9cfeca7b9028e224e42be3cf1982ce21a0899e420717b84d31b4429e415ce
SSDEEP 6144:oWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCPD4SsSOg:oWkEuCaNT85I2vCMX5l+ZRv//G
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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