139707aba0063471568b1f944d3034e18120fc44ddd6dc24fbfdfbfd316c8cdf

Analysis

max time kernel
148s
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
19/02/2024, 01:45

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General

Target

2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe
Size

42KB
MD5

b0c03ab1c18adfd1cf71d32f60a36ca0
SHA1

a11a70cffb945fa6be8fdf4619878ea910a37328
SHA256

139707aba0063471568b1f944d3034e18120fc44ddd6dc24fbfdfbfd316c8cdf
SHA512

fcb7fbaa116ac6726789f68d930a9837eee4ec557f81b68a084a4cd10b679f6993d06528f74743514c8ce40e75cc3d6797a717242ffc470d8cb78f0b1269496d
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhbCi44Cg:6j+1NMOtEvwDpjr8dx4E

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231e2-13.dat	CryptoLocker_rule2
behavioral2/memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2600-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231e2-13.dat	CryptoLocker_set1
behavioral2/memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2600-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00070000000231e2-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2600-26-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	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 3864 wrote to memory of 2600	3864	2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe	84
PID 3864 wrote to memory of 2600	3864	2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe	84
PID 3864 wrote to memory of 2600	3864	2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3864
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2600

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
42KB

MD5
00d5fb2592a8351580862f48923d26d6

SHA1
9598eeff5aeca72dc0e4530a92d54c9ec4b97b34

SHA256
d7db110953f8db26fba72cdd5d884ee5168a5970355989f0d62b41eaccec2e79

SHA512
c46f70c29b7a0a50f7fac03d967ec93068c249b4b1d1db98f94eb090c5611fba66796414727cdcce6ee2c812fc2189749a558aaace161eed498d33f2dc9fb39a

Download Submit
memory/2600-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2600-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2600-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3864-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3864-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3864-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download