f59e317bf02593ae4ba5933bb8a2ade13dbb712452827986e3b081cc64547130

Analysis

max time kernel
116s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 03:40

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General

Target

2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe
Size

47KB
MD5

e9b45da180e0af7cc8624faa62c27c92
SHA1

51f643010fe430baccb3305189046feaaf30a8f7
SHA256

f59e317bf02593ae4ba5933bb8a2ade13dbb712452827986e3b081cc64547130
SHA512

0b418c2747df492df5530e805e1d14cbc093cc5f0b4f692f14256788c2ab5d6978a12f33b7fa6b307859d5d01401c7ab71d35497bc160a22b3a4c51f0f174d7e
SSDEEP

384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/3lQIqq:XS5nQJ24LR1bytOOtEvwDpjNbP/3lA0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4352-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b000000023173-13.dat	CryptoLocker_rule2
behavioral2/memory/4352-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1428-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1428-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4352-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1428-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1428-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4352-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000b000000023173-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4352-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1428-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1428-55-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1428	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 4352 wrote to memory of 1428	4352	2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe	88
PID 4352 wrote to memory of 1428	4352	2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe	88
PID 4352 wrote to memory of 1428	4352	2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_e9b45da180e0af7cc8624faa62c27c92_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4352
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1428

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
47KB

MD5
78f54a1af5670a947cb0c5a74eab83f4

SHA1
1ee08e1ac4f5f4d5830072d9af3ae5ed0adbca5f

SHA256
477fb3d4f1b7e18986d276564227f61534677a320cdee6227fefcc930ad9e98c

SHA512
da7bc18ffe69a9d914aed4cb3d930d67c8e472034d5cc28d4d81a28cc80041a100817c5b9233d997991893cecc2a804e28bbd3d1f6438ae60b8e4d05323daccd

Download Submit
memory/1428-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1428-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1428-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1428-55-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4352-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4352-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4352-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4352-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4352-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download