e64ebd57fdbe887c43dace7bf1deedc028d7516f5515e0bcffdd3caaf997010c

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 18:27

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General

Target

2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe
Size

41KB
MD5

492f0387ddae085d23b3cd760ce100d3
SHA1

792664d071bd8c3db35b0cedc221f1e75f4d8373
SHA256

e64ebd57fdbe887c43dace7bf1deedc028d7516f5515e0bcffdd3caaf997010c
SHA512

3dc7858a432e84b25eb4e2f384d5c46ce279dc086c30147b6910b029d585e9d2eaef8036530ad9d0813cb5eceb6f134295baa98db6e8a6f88dde5709b6686563
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6n8VC:6j+1NMOtEvwDpjrR88

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4400-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c0000000231e7-13.dat	CryptoLocker_rule2
behavioral2/memory/1728-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4400-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1728-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4400-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c0000000231e7-13.dat	CryptoLocker_set1
behavioral2/memory/1728-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4400-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1728-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4400-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c0000000231e7-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1728-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4400-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1728-27-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1728	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 4400 wrote to memory of 1728	4400	2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe	86
PID 4400 wrote to memory of 1728	4400	2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe	86
PID 4400 wrote to memory of 1728	4400	2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_492f0387ddae085d23b3cd760ce100d3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1728

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
41KB

MD5
d73130971afcdb7fa20f24974049ec7f

SHA1
9f13bf3f36a627fa08e135121a0356e71cae0e65

SHA256
0691c461a461a6f8337859e94eff394d45c34fb183232c519970a689780913d4

SHA512
91b0b3bf62427630a6551edc97a624c1043fad513cbf76dfc71f8ebf5ecc88c2595ebac1ecac1faac73a257f16390f3579d6a725e84333a20cebce5f56738f04

Download Submit
memory/1728-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1728-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1728-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1728-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4400-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4400-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4400-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4400-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4400-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download