e87db129aaa94ab666280f9d83f30f43c213e9a1ed1fc923f63c268616e98002

Analysis

max time kernel
87s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 08:24

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General

Target

2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe
Size

40KB
MD5

265c5680cf838db27fade2004a972304
SHA1

5e362c4fcfe672ac8195903935265a6e30432fda
SHA256

e87db129aaa94ab666280f9d83f30f43c213e9a1ed1fc923f63c268616e98002
SHA512

620940f4f8966a2351ea839e0224f70eff1b26ce4f5374d31019db15247396705f4ce8e02ac047833a2939a62fb013492afa74b5dfe908f6d8fcca176c487bbf
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnI1:m5nkFNMOtEvwDpjG8hgpI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2184-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f0-13.dat	CryptoLocker_rule2
behavioral2/memory/2184-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3844-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2184-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3844-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2184-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00080000000231f0-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2184-16-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3844-54-0x0000000000500000-0x000000000050E000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3844	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 2184 wrote to memory of 3844	2184	2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe	88
PID 2184 wrote to memory of 3844	2184	2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe	88
PID 2184 wrote to memory of 3844	2184	2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_265c5680cf838db27fade2004a972304_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2184
- 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:3844

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
40KB

MD5
78ebf214c684213049e5028b2e7f3797

SHA1
e573e5e0567405a039c9a466e48f864335359196

SHA256
aa686e940e53bdebf5c78b8156371dd5ed91dfeb8c2dbd212d2431312d96f3cb

SHA512
a78128d43fa7f45a97dc4bda652f9cfb430a8c1046da760ca466bdd2c0395c5d2e02c0a338a1d4dc471e08555e5c3dce4aeeccaef39991524e37a62e89adf3c4

Download Submit
memory/2184-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2184-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2184-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2184-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3844-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3844-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3844-54-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download