fc26892cc1a9977b474770bff86989a63ba1813738063e8ae16127744c9975c4

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 00:35

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General

Target

2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe
Size

41KB
MD5

4ddc68c62b12e409b9b8765d609cb038
SHA1

3c0afd27466010e3d1d85444ab6be6c547777ea9
SHA256

fc26892cc1a9977b474770bff86989a63ba1813738063e8ae16127744c9975c4
SHA512

7e41e5137e3dc30a398ef3addcb9d651b6f96b11ec94a4339783bc9415d57ba7f33e461dba35ca2edf2aebbb97f10dfaf402aa4226bf0f6d02880877445000ba
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6n8+:6j+1NMOtEvwDpjrR8+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1884-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/1884-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2036-52-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1884-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/1884-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2036-52-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1884-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000001ebc7-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1884-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2036-52-0x0000000000500000-0x000000000050F000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2036	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 1884 wrote to memory of 2036	1884	2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe	91
PID 1884 wrote to memory of 2036	1884	2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe	91
PID 1884 wrote to memory of 2036	1884	2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_4ddc68c62b12e409b9b8765d609cb038_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1884
- 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:2036

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
3451f3a48116defe08dafd7586e188f0

SHA1
47b72164430387a9748b6264546de1aa53824cbe

SHA256
2d0cdb4269a5c592e6a36004979f663ffeed2ea242abf1a3b7272ad94864ed91

SHA512
2bebb8e6c06ecd6776fe3582be8e7ed547dead94205ddf9ad32535169b968e65dce90c4940e6031483012ee5929e0fff31603b5a8579aa2f0fcc402e76969cdc

Download Submit
memory/1884-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1884-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1884-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1884-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1884-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2036-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2036-22-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2036-52-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download