cryptolocker | c8b41de669363ff7fecae244b46fcc2455cf09c10fd783815094659f912ee326

Resubmissions

28/03/2024, 15:06

240328-sgx9sshb9x10

28/03/2024, 14:55

240328-sar47sha3x10

Analysis

max time kernel
48s
max time network
49s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 15:06

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General

Target
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe
Size 338KB
Sample240328-sgx9sshb9x
SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
MD5 04fb36199787f2e3e2135611a38321eb
SHA1 65559245709fe98052eb284577f1fd61c01ad20d
SHA512 533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP 6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
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
2788	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2788	{34184A33-0407-212E-3320-09040709E2C2}.exe
2520	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2316	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe
2788	{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-1-5-21-2248906074-2862704502-246302768-1000\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 8 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2788	2316	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	28
PID 2316 wrote to memory of 2788	2316	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	28
PID 2316 wrote to memory of 2788	2316	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	28
PID 2316 wrote to memory of 2788	2316	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	28
PID 2788 wrote to memory of 2520	2788	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2788 wrote to memory of 2520	2788	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2788 wrote to memory of 2520	2788	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2788 wrote to memory of 2520	2788	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe
"C:\Users\Admin\AppData\Local\Temp\d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2316
- 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\d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000C8
    3⤵
    - Executes dropped EXE
    PID:2520

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 \Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Size 338KB
SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
MD5 04fb36199787f2e3e2135611a38321eb
SHA1 65559245709fe98052eb284577f1fd61c01ad20d
SHA512 533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP 6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
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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