cryptolocker | 7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a

Analysis

max time kernel
151s
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 03:15

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General

Target

a769c781e3748314825f3effbd176b9b.exe
Size

400KB
MD5

a769c781e3748314825f3effbd176b9b
SHA1

23b605d66164573492da31bcdffccc01fd9d3957
SHA256

7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a
SHA512

8456c3718f529d17e182b865e8c8fb2c00f43abfaa4eabd024bafa6874ddc90a4eb624229ddbad5e9f0e244ff0de107fbef116038cb72fff13f703b46145c536
SSDEEP

6144:VWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCvgCSng:VWkEuCaNT85I2vCMX5l+ZRv9CD

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
224	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
224	{34184A33-0407-212E-3320-09040709E2C2}.exe
2260	{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-1-5-21-3808065738-1666277613-1125846146-1000\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 4784 wrote to memory of 224	4784	a769c781e3748314825f3effbd176b9b.exe	97
PID 4784 wrote to memory of 224	4784	a769c781e3748314825f3effbd176b9b.exe	97
PID 4784 wrote to memory of 224	4784	a769c781e3748314825f3effbd176b9b.exe	97
PID 224 wrote to memory of 2260	224	{34184A33-0407-212E-3320-09040709E2C2}.exe	98
PID 224 wrote to memory of 2260	224	{34184A33-0407-212E-3320-09040709E2C2}.exe	98
PID 224 wrote to memory of 2260	224	{34184A33-0407-212E-3320-09040709E2C2}.exe	98

C:\Users\Admin\AppData\Local\Temp\a769c781e3748314825f3effbd176b9b.exe
"C:\Users\Admin\AppData\Local\Temp\a769c781e3748314825f3effbd176b9b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4784
- 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\a769c781e3748314825f3effbd176b9b.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C
    3⤵
    - Executes dropped EXE
    PID:2260

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=3812 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:3068

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

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
400KB

MD5
a769c781e3748314825f3effbd176b9b

SHA1
23b605d66164573492da31bcdffccc01fd9d3957

SHA256
7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a

SHA512
8456c3718f529d17e182b865e8c8fb2c00f43abfaa4eabd024bafa6874ddc90a4eb624229ddbad5e9f0e244ff0de107fbef116038cb72fff13f703b46145c536

Download Submit
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
297KB

MD5
541d57cad6a6c022944b6b2f5aa37d96

SHA1
de207c7f40dd66afd4d8198c01a516095631a442

SHA256
ca49dc2ff847df8b885053c916c8ac9471e2d4514f92005cf49151a0455f64be

SHA512
0de5f692c2a5ee7b60ebe4ccdd2c1b8248e79709cfe660182f97bea4dc2698c4fe9ade7130de1a2e3545d5b27b63d0a06709e2823fa02202f56b42c551d25650

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads