1893589adfa7d19f298d68bb4d128e5f4ac430efdcb64f938406dbee97fc7731

Analysis

max time kernel
138s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 09:57

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General

Target

2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe
Size

40KB
MD5

891f434ba3d6d8b2342b4a01190c71f8
SHA1

7ac1f6a665edaa25d9e5b61189c29eefb60630e6
SHA256

1893589adfa7d19f298d68bb4d128e5f4ac430efdcb64f938406dbee97fc7731
SHA512

ea98f4d78b450857ddec492b5fc83a2ca6afc110eee8c00270a8043961fdfa925137a7edabf47458fd015ddf3d403b1616637c17739db495e261864896cf21c8
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRrd:m5nkFNMOtEvwDpjG8hhXT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2040-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2040-11-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023139-14.dat	CryptoLocker_rule2
behavioral2/memory/2164-55-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2040-11-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2164-55-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2040-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2040-11-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023139-14.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2164-55-0x0000000000500000-0x000000000050E000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	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 2040 wrote to memory of 2164	2040	2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe	84
PID 2040 wrote to memory of 2164	2040	2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe	84
PID 2040 wrote to memory of 2164	2040	2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_891f434ba3d6d8b2342b4a01190c71f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2040
- 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:2164

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
40KB

MD5
83515e77e0b7c0cf5f8718b0464b0354

SHA1
d741526ee0ee11f629a3b15123800ca6c2e7ae13

SHA256
d36d0ac49dac38fcb17bd93b786af63ce741c41d539b7aa756ed2915c9cd88c7

SHA512
8c64c121af1bacf6828df59daa75e08b96e7632bfe6c5e475f324d556e7289031d20ae69984b5b37869ae992b6ac94688513d157e3bc93a23cec4f5baa89a90c

Download Submit
memory/2040-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2040-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2040-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2040-11-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2164-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2164-22-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2164-55-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download