56da096c249a1c76ab25643d40cf1472baedc429baaa7b3e472f892e4a007589

Analysis

max time kernel
138s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 00:30

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General

Target

2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe
Size

100KB
MD5

758bc301d314e90fe9fb7ab3bf5bc30f
SHA1

2fd55a8566d79c71efd069e56622aa8ee02ba0d7
SHA256

56da096c249a1c76ab25643d40cf1472baedc429baaa7b3e472f892e4a007589
SHA512

cdedee60412be6c98f1ef7496b3fb82184f0610dd19afb7837659d7ce0572d7f491115a1a7d5c7cf8c2f70b82ec1e592243f17ea975e36dfb43969916a2f0045
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMK:xj+VGMOtEvwDpjubwQEIiVmkxv/5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002312d-13.dat	CryptoLocker_rule2
behavioral2/memory/4140-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4708-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002312d-13.dat	CryptoLocker_set1
behavioral2/memory/4140-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4708-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002312d-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4140-20-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4708-54-0x0000000000500000-0x0000000000510000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4708	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 4140 wrote to memory of 4708	4140	2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe	84
PID 4140 wrote to memory of 4708	4140	2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe	84
PID 4140 wrote to memory of 4708	4140	2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_758bc301d314e90fe9fb7ab3bf5bc30f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140
- 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:4708

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
101KB

MD5
fe2ca2801ac3f7d1160ee5fcec9c8950

SHA1
954426b8ec119b097058d0fcbba98b2543add9da

SHA256
9b9769e00a562b9df6ffb14df298cc54b5630473dfc5eaec9bcdbd6495b0afad

SHA512
3ce5a590020cfd104ad74dc5ac7075ee637534b41b1107b16f593735af2f246d7091248d432823e7dc8e4dcc2c74bcb95a9a9445dc15008fcb8ce506fcca834d

Download Submit
memory/4140-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4140-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4140-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4140-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4140-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4708-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4708-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download