172e0f8ee79629305dd286167820f06c7fb5e092da7db842581066ec115d4e92

Analysis

max time kernel
163s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 01:31

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General

Target

2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe
Size

137KB
MD5

3f1028574053a921b6ca35c2627b1c09
SHA1

a220d9dcb3d4c4d46dcd3410105ce6cbaa169926
SHA256

172e0f8ee79629305dd286167820f06c7fb5e092da7db842581066ec115d4e92
SHA512

a8368515c11a7409f622ea3b33e0c5ebf20f440f69380320ea2826bda4438f10208ffe9952266edd74ece32f10fcf7842a1613c451f41dd94bafd97d8fba2a9a
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwqWsviy6ixHL:u6a++OtEvwDpj6z4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023226-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023226-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2384	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 2384	4844	2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe	90
PID 4844 wrote to memory of 2384	4844	2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe	90
PID 4844 wrote to memory of 2384	4844	2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_3f1028574053a921b6ca35c2627b1c09_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
137KB

MD5
6e7d9678cba5ec6940d25e77fe327712

SHA1
de299ad2068d347711d9e1448b9ac7786aee7a18

SHA256
eaeac1054bb2308aeb1fa38e274b38a274e9f692991625b95d3b7e2acfe2e325

SHA512
40e14858f9d7c4f48fd1a3d5688e857fe68e0a74c75037d9889d895ff0b6ee9d9cd14ff08ef47f219f09ff0d133108ae1403335bfbaf85b8db9312f7bf5841d0

Download Submit
memory/2384-17-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2384-19-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4844-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4844-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4844-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download