90f64e81fb955b48891c59fb00110f13fa35ceeb52805babe04b2601dd241455

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/06/2024, 15:54

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General

Target

2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe
Size

43KB
MD5

524c875c55b48ca4e96c646293924d39
SHA1

890a2fe6c5139cc9e89f124ee14b33bb20091901
SHA256

90f64e81fb955b48891c59fb00110f13fa35ceeb52805babe04b2601dd241455
SHA512

98393859a59c1f07f1842728d80bdd3a224e3920d8fc397a8e6b68c544332707eb8033fb7f0e61708685aff862f434d36480ad07cabeab4ef643f25315b829f9
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhl:i5nkFGMOtEvwDpjR+viHshNT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4900-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023370-13.dat	CryptoLocker_rule2
behavioral2/memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4548-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4548-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4548-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4548-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4900-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c000000023370-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4548-19-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4548-28-0x0000000000500000-0x000000000050F000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	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 4900 wrote to memory of 4548	4900	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	81
PID 4900 wrote to memory of 4548	4900	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	81
PID 4900 wrote to memory of 4548	4900	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4548

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
43KB

MD5
c095318da799019e14edce676f3a18ef

SHA1
bcd4ac565440ad64953fac9bf50eb6b867975b8a

SHA256
9ba02675a09fa67f920c5c724383f33e6e76c6f76c6280ec24a98aa6880c02b5

SHA512
1e1ccba7a92f8c65f453ce98768e98bf9eeb7dcb00f36b2f20d95bd1f67f586031a827d856d53c0dc9b8974e743ac815138da3e116bffb3ad0baa0176234bf17

Download Submit
memory/4548-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4548-21-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4548-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4548-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4900-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4900-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4900-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4900-9-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download