4aa4d9029a7fa0f80bd40ad462c1e295338822ec91f18a3497d04396c0e2ffe9

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
27-04-2024 05:22

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General

Target

2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe
Size

55KB
MD5

fb5a09cd8fc1aa8b5f70c5e267e6c1b4
SHA1

dd1b1845811ee73d12ff4c851d859f841fb98b3a
SHA256

4aa4d9029a7fa0f80bd40ad462c1e295338822ec91f18a3497d04396c0e2ffe9
SHA512

fad430d2d7a7c2ec3e4ecb45b3d96888a1b4bc3423daffe8a295a9d3ca2e1e4c7c3d48145874b8f11d48c4d04eed8dfdb9fbd17d189bc966199cb7b710d58324
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7/eld:6j+1NMOtEvwDpjr8oxExe/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000023b2a-13.dat	CryptoLocker_rule2
behavioral2/memory/1676-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4016-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1676-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000d000000023b2a-13.dat	CryptoLocker_set1
behavioral2/memory/1676-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4016-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1676-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4016-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000d000000023b2a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1676-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4016-19-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1676-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1676	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 4016 wrote to memory of 1676	4016	2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe	85
PID 4016 wrote to memory of 1676	4016	2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe	85
PID 4016 wrote to memory of 1676	4016	2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_fb5a09cd8fc1aa8b5f70c5e267e6c1b4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1676

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
55KB

MD5
7a86029de89cb9a6dcc3b664419c80e5

SHA1
4c931b6f5791a30c26002ed5e23232f417e2589d

SHA256
44792129ebc7f317ede36e358a7fde1951f88b06eb255db64b859a8f5daa9e33

SHA512
5a75356536ff98d90f4aa46a9fb35ad67cf2b4e1e32b09632dca53efa21df2c0b940df196d57020d32e567c2fba8119da557d70ed34cf978a54ad3fe0d338271

Download Submit
memory/1676-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1676-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1676-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1676-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4016-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4016-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4016-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4016-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4016-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download