1266c3cd5649163317405198bc8eeae65e7130fe508375057968bbd0f10fc1ee

Analysis

max time kernel
90s
max time network
149s
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 10:33

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General

Target

2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe
Size

84KB
MD5

82cb159d2b0feef98f25dcf361b043b3
SHA1

9b047a64012d4576e50cf9a2a77dc682d0187570
SHA256

1266c3cd5649163317405198bc8eeae65e7130fe508375057968bbd0f10fc1ee
SHA512

53b945f6378feaedf50c81eba72d39f040942b294f12d244539dfcaa36bbbf1499637f77040e44dfbae233ea27dc4e83d6c62967160f4ad8c24fc39a1432cf91
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvP20f7:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8Fj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2800-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231df-13.dat	CryptoLocker_rule2
behavioral2/memory/2800-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4140-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2800-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4140-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2800-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00070000000231df-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2800-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4140-53-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4140	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 2800 wrote to memory of 4140	2800	2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe	84
PID 2800 wrote to memory of 4140	2800	2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe	84
PID 2800 wrote to memory of 4140	2800	2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_82cb159d2b0feef98f25dcf361b043b3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2800
- 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:4140

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
84KB

MD5
5e19b577407099104d534222117b59bf

SHA1
44df185a89aa731b28c35f9c5ccd6feeb91582a8

SHA256
1853c1e8181570b9dc5103182326099bd1a7a734b3239e10065e3ef9d86805cd

SHA512
80e43ac46212c97b34883dd7b434edf9cccf464c9ed32967ff7ca48c4adf9c1adffcc8ce6115574932cb322fee7693f082ca9961e439c6b166e8941e7d2050e2

Download Submit
memory/2800-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2800-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2800-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2800-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/2800-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4140-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4140-53-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download