898291a761cd152c4a766cc70ba0331aef78ed0dff196bf8653ae1cf800ff4dd

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 09:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe
Size

51KB
MD5

c91e45ec014d4a711009dbc9315e3a51
SHA1

acf6322ea99685912426c03486264e0b8bf772bd
SHA256

898291a761cd152c4a766cc70ba0331aef78ed0dff196bf8653ae1cf800ff4dd
SHA512

40ee82ea5b13c8e20ad8e3e57ef5277bae5748b6b1b9d11c07bb595f83f333adcc21811d31446ceaae37efc6e544bf7e0e3dee30de64b6f03927bd69518737e8
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRkHh:6j+1NMOtEvwDpjr8hhXiB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1056-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_rule2
behavioral2/memory/860-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/860-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1056-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_set1
behavioral2/memory/860-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/860-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1056-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000001db0e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/860-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/860-27-0x0000000000500000-0x000000000050F000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
860	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 1056 wrote to memory of 860	1056	2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe	87
PID 1056 wrote to memory of 860	1056	2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe	87
PID 1056 wrote to memory of 860	1056	2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_c91e45ec014d4a711009dbc9315e3a51_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:860

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
51KB

MD5
e4431ac2c1c5ce422aa1608c976cadff

SHA1
e323f73f750be08219f13243b9e50c42c60b1f89

SHA256
acff77c4db65ff9fad8914a75759627a00c0a70452b6f291ec921a45f9829428

SHA512
91a36b9371b90b8e5fc9b09efc58dd83b7ef45b64ecf9bea7749329896646f68849d3422129e78b9d07d3729f6f177bc2e9ab2560d5b37283cb807ec8bae64cc

Download Submit
memory/860-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/860-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/860-24-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/860-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1056-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1056-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1056-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1056-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download