70a0a528a1ab705cfcbe63911bdc3cd37cc76eebdc1b08768cfa9495554c7adf

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16-03-2024 00:50

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General

Target

2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe
Size

101KB
MD5

4c0441ed6237946ba3d4d9224748ee9a
SHA1

cb0d264a63004cd0b0d5658ccf9c8317dc7a2235
SHA256

70a0a528a1ab705cfcbe63911bdc3cd37cc76eebdc1b08768cfa9495554c7adf
SHA512

bcdf974d2be9c2ca3093e72950585dfbde6330234e0816c74560dba1dcf6f84ab100e37882bd318d7294d53c864033d8c0ce678631d6fc24e59a54cc6f2176d4
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNu5aTJ:i5nkFGMOtEvwDpjNbwQEIikgNx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/516-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023244-13.dat	CryptoLocker_rule2
behavioral2/memory/516-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4300-58-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/516-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4300-58-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/516-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023244-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/516-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4300-58-0x0000000000500000-0x000000000050F000-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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4300	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 516 wrote to memory of 4300	516	2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe	89
PID 516 wrote to memory of 4300	516	2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe	89
PID 516 wrote to memory of 4300	516	2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_4c0441ed6237946ba3d4d9224748ee9a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:516
- 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:4300

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
51f93e97dc39774927672e91707b2e02

SHA1
ffe0fb74d31397ed2525c6e9c0343cb00a741e14

SHA256
bc672a22fcf440dc51989adb5a78557f0db89a7f22fd14bf4fea50f0b9bab023

SHA512
aad3c052a3aba140083484442dc318f48b2ee9e5eb708f6882a3250971cae9144a8bc282e6138649299ac7491a5246c12480dde8dc2ea6d5d1d32b0738f16856

Download Submit
memory/516-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/516-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/516-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/516-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/516-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4300-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4300-21-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4300-58-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download