903575b4fd53a1dc493d01314c7648eeaf17fbaaf6bda146cf423c4a6baef532

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 17:55

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General

Target

2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe
Size

102KB
MD5

932647fa968bed1ad446a5477b57b056
SHA1

bd36fea153e41332ce1af1ad4e072f86bd04fca6
SHA256

903575b4fd53a1dc493d01314c7648eeaf17fbaaf6bda146cf423c4a6baef532
SHA512

cbccc5387e05dee0bf2433a32de94ae8421a78a9074f7682b7091eef243c80102a63a56d4f83cae9ff550993197ef7136f046a8e549d917d844762f456bd93bc
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMb5:xj+VGMOtEvwDpjubwQEIiVmkxv/m5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023208-13.dat	CryptoLocker_rule2
behavioral2/memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3812-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023208-13.dat	CryptoLocker_set1
behavioral2/memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3812-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023208-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3812-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3812	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 640 wrote to memory of 3812	640	2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe	87
PID 640 wrote to memory of 3812	640	2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe	87
PID 640 wrote to memory of 3812	640	2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:640
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3812

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

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Downloads

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

Filesize
102KB

MD5
e77b66212bf81307fe6ea703d0473536

SHA1
6731b3daead9cc86be227a6abfaed3595bf29d6d

SHA256
c9a6adb38af0588004abbe66591d5a0dd635be9dd9b61705eb0c826989f4f0e6

SHA512
180461ffd29c48dd451f01388c9490e187cee9082f057cd817edc77f65e615a44f1de2084dfafdf1ff95524b0a5783c5bee97cec41b9dc3aea793846a51cf403

Download Submit
memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/640-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/640-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/640-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3812-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3812-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3812-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download