3ba9c2c7b80f945aff61cade7093ec2cbb0df6fee1bc5447fb94f7afe95b2ae7

Analysis

max time kernel
88s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 09:10

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General

Target

2024-02-01_369d83519108befba40062d81a8c7ae2_cryptolocker.exe
Size

47KB
MD5

369d83519108befba40062d81a8c7ae2
SHA1

c3b153cdfefe9e559a879d9f10bf054f80c2cea4
SHA256

3ba9c2c7b80f945aff61cade7093ec2cbb0df6fee1bc5447fb94f7afe95b2ae7
SHA512

9996efa8757f1914fe93ed5e1f39601a0cc0b1d0922573757097f154eee90f6552355fbfa18d548d13d53872348b6b2c0216f08799a998a1a4c5dd58a99f3874
SSDEEP

384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/3lQIqj:XS5nQJ24LR1bytOOtEvwDpjNbP/3lAVD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/440-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231f4-13.dat	CryptoLocker_rule2
behavioral2/memory/440-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3056-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/440-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3056-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/440-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00070000000231f4-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/440-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3056-55-0x0000000000500000-0x000000000050F000-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	2024-02-01_369d83519108befba40062d81a8c7ae2_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
3056	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 440 wrote to memory of 3056	440	2024-02-01_369d83519108befba40062d81a8c7ae2_cryptolocker.exe	84
PID 440 wrote to memory of 3056	440	2024-02-01_369d83519108befba40062d81a8c7ae2_cryptolocker.exe	84
PID 440 wrote to memory of 3056	440	2024-02-01_369d83519108befba40062d81a8c7ae2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-01_369d83519108befba40062d81a8c7ae2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_369d83519108befba40062d81a8c7ae2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:440
- 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:3056

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
47KB

MD5
5f20bbd8105a4589779eb5d6de8b02ff

SHA1
9897d9170c9c148448849d4bb91b897df48db3da

SHA256
1d15d842edf0509c9ea94bf95d151287fc5604566d41a70e967a52e506d25364

SHA512
7e9b69497c3ef40d0d6592d9466b90d7f649516937a152c40a9ff8e2592345e59b95e02382108141fe59a5d34ca8afbb56ea0af889fb6bf48ed09899834bd260

Download Submit
memory/440-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/440-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/440-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/440-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/440-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3056-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3056-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3056-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3056-55-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download