74f4b420cd045731d2f4a2aa70a56f7cc5de5de0ba183edef2e0100d50dfb55b

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 19:53

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General

Target

2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe
Size

386KB
MD5

448171ebc71c340e292c03977cd7e444
SHA1

deae59e3e4085ef11594fecfd685158b7bd2341d
SHA256

74f4b420cd045731d2f4a2aa70a56f7cc5de5de0ba183edef2e0100d50dfb55b
SHA512

bceb0ff00a365ecad00f4aa184a8ce43a22cd1302eeecced1289c190f5232caaed93c0dcbf2592e461c878bb3958979c189426039e25c45d25dd5b2f543c97ea
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXS:nnOflT/ZFIjBz3xjTxynGUOUhXS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f9-12.dat	CryptoLocker_rule2

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2804	hasfj.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 4436 wrote to memory of 2804	4436	2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe	90
PID 4436 wrote to memory of 2804	4436	2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe	90
PID 4436 wrote to memory of 2804	4436	2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_448171ebc71c340e292c03977cd7e444_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2804

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\hasfj.exe

Filesize
386KB

MD5
32f136a6fc41b42bc4b1c5f3dff00ae7

SHA1
c9ea74b7328229b3d08b4dc44a117150487ce09e

SHA256
c63f831ad63ac112adb2b880318cd774452962b13a9e3962e383d15ba7efe728

SHA512
fa4a03bf8b099695ec3c1adc52760481241875874e7fed456fe5862385742f0b3dfe78aef7e2a462e2aa1b11285b21207289167e2f94d5f77af90a730ee2d4fd

Download Submit
memory/2804-18-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/2804-17-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4436-0-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4436-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4436-2-0x0000000002500000-0x0000000002506000-memory.dmp

Filesize
24KB

Download