1c0eb6bd694c5e0d4752ab6df91c81e85a90101d8e6a63a29fe997861a10ebd6

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 05:00

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General

Target

2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe
Size

47KB
MD5

bfc6b238922c6c638e30269753b9f4d1
SHA1

8ee2cae1b74465d075e26f554f106f84c110711b
SHA256

1c0eb6bd694c5e0d4752ab6df91c81e85a90101d8e6a63a29fe997861a10ebd6
SHA512

e38912f0e5dd3888961eafb6c48881f2ee710cf2531af2902a4539dc2720d272823756e16ecee063f44a92bad6c86695a39483d7735a22b385e4804b9c4ddcdd
SSDEEP

384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/7IVthY:XS5nQJ24LR1bytOOtEvwDpjNbP/MPQT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3248-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023112-13.dat	CryptoLocker_rule2
behavioral2/memory/3248-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3248-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3248-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023112-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3248-19-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2596-26-0x0000000000500000-0x000000000050F000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	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 3248 wrote to memory of 2596	3248	2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe	83
PID 3248 wrote to memory of 2596	3248	2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe	83
PID 3248 wrote to memory of 2596	3248	2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_bfc6b238922c6c638e30269753b9f4d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2596

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
5767c599b5d1cbc04eb5a7f6fa0bb076

SHA1
dcc46d7d4efffb457836300e980c225aed9d2e09

SHA256
a2b6a0f1e0a8845bc65c4e040e9d5b30392fff845f1650baaa4a4c7f693c317c

SHA512
98dd2e49b8e0de5b701702389022e14e28c32846fa25fd322b7f578a941c608e62ebea74013f5dcb208ea68efb82604880dc8c1dc090719d948127ebf4c6802e

Download Submit
memory/2596-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2596-18-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3248-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3248-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3248-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3248-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3248-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download