d3f04128bef536c4bcf89a0d728e97435fe0305fb854b048fbe825702fd989e0

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 11:24

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General

Target

2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe
Size

40KB
MD5

003bfa6663ccb47b6fc9ec49675f5b95
SHA1

85cbc3048845686eb3892dbff9710656fe22518f
SHA256

d3f04128bef536c4bcf89a0d728e97435fe0305fb854b048fbe825702fd989e0
SHA512

60e56b975c21e2537393a937e305963c73ed2c072e99bdaeeb69c2d7e2740437a229b7466d02d4645590999323641f34384382062b45ccf72d10b9c608fe57e1
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnHG:m5nkFNMOtEvwDpjG8hgpHG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1072-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/1072-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3172-51-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1072-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3172-51-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1072-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002320a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1072-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3172-51-0x0000000000500000-0x000000000050E000-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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3172	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 1072 wrote to memory of 3172	1072	2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe	88
PID 1072 wrote to memory of 3172	1072	2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe	88
PID 1072 wrote to memory of 3172	1072	2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_003bfa6663ccb47b6fc9ec49675f5b95_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1072
- 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:3172

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
41KB

MD5
3a1b6f1ce7f4848ae942c708b3ba8354

SHA1
5e22a2ba18ea10fca2593844b15b51c8e309a4f9

SHA256
591fea75b95d936724dc41a775e4bbb6af9b20c1d003355b0f841eef88c3e5f2

SHA512
b484fb69e8035e33363bb4ef538d4012fd148c838b0ce4d1f53cfdd569a5774c7fef1b05c062d5b5b254331c8769ae242f3ef89c4a885fe3e8912d26d4fb86f1

Download Submit
memory/1072-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1072-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/1072-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/1072-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1072-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3172-51-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download