91bacc30b78cd9681b271eca0ce059567cc25e880afd3b2c1794e68e00437a40

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 19:23

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General

Target

2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe
Size

39KB
MD5

1092a55873f2f9904f3bd2000c1f9c1b
SHA1

f343f0a6a0d0916263ec07de611a0a2c6faa2305
SHA256

91bacc30b78cd9681b271eca0ce059567cc25e880afd3b2c1794e68e00437a40
SHA512

b92e1d510cb8146b3a0fbe45cb3515d13e61790cbdc6232d4d711e60afbeece3256a75901dabc88d0388948d8221d0233899a305854b5cd09bf70328bf485cf9
SSDEEP

768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDy:ZzFbxmLPWQMOtEvwDpjLeJAsKcy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 2 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b27-13.dat	CryptoLocker_rule2
behavioral2/memory/1136-17-0x00000000004E0000-0x00000000004E3000-memory.dmp	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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1136	misid.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 1128 wrote to memory of 1136	1128	2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe	83
PID 1128 wrote to memory of 1136	1128	2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe	83
PID 1128 wrote to memory of 1136	1128	2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_1092a55873f2f9904f3bd2000c1f9c1b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1136

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\misid.exe

Filesize
39KB

MD5
24c90b9d43ff639a252e3d2d9ed488b2

SHA1
cc5b29238d2428191127ea70ac5e79b341ca15e7

SHA256
f0da63ceffa85788ffa505715e4955387b77a97462266fb3798a1d47320007d6

SHA512
10a947b0ba39a69c60dcb5778f735bc3f22e062f930e4973e86abfc96e7bab20f2a7dea85bf1a3344618fcc666f784582e5aaf3a7947c9051f9a8fa9b804f061

Download Submit
memory/1128-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/1128-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1128-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1128-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1128-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/1136-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/1136-20-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download