5f9cb38a38d5bcad16ba7c8e74146d7d8d54cee8dff84f454999e5f857cd75c7

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 08:47

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General

Target

2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe
Size

94KB
MD5

e72636bf8a8074f4daca321194d5d82e
SHA1

81ef64571eccc099995efa986747c5f3196518bc
SHA256

5f9cb38a38d5bcad16ba7c8e74146d7d8d54cee8dff84f454999e5f857cd75c7
SHA512

a017a3a95f5e7fe08215e3d6ea58614593f54beea5f6db077bf77cd0d5f4620eb7d70afff6e30d7f6f0e4b37ed7cce505081beb18d3ebabb1a0c039104cb10fd
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpf:V6a+pOtEvwDpjtz0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.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	2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	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 3792 wrote to memory of 4008	3792	2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe	87
PID 3792 wrote to memory of 4008	3792	2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe	87
PID 3792 wrote to memory of 4008	3792	2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_e72636bf8a8074f4daca321194d5d82e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3792
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4008

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
94KB

MD5
71e16efb840b1ad2b043c7cc50dfcae4

SHA1
d0af4c1ac99acfd0ea333bbf60e85a55cad61c0f

SHA256
b04eba4ec3f631a70378517f00cb24015f3e8b41d41a55a392ecc6f31e415da9

SHA512
9cd97e228573b0acf5f98b878b8e67141f16f10fb21899a52e3e87d798c79e0b92f4ec7dca6fd5afeff898ae74aca43eb5e6db815cefce0dc4213bc0118d5f4f

Download Submit
memory/3792-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3792-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3792-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4008-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download