fd43af73597da0714180fa9fc886af160b0146b5d1db1a04fda15239daa62fca

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 10:52

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General

Target

2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe
Size

83KB
MD5

a82a0dc48769a0599722fc1db6c55e48
SHA1

f6f4074e0a1557bd0f73304ece4c6db3cde9c5b9
SHA256

fd43af73597da0714180fa9fc886af160b0146b5d1db1a04fda15239daa62fca
SHA512

59f850cc2759ed2462666bce872ed6a994d91face4ff3ff6d13797183fa1049ffcbae43a704c8e2eba8dd52805914943b2b273f15fccaa3e959f1beef9e4a6fe
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrC/:TCjsIOtEvwDpj5HE/OUHnSMe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2400-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_rule2
behavioral2/memory/2400-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1548-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2400-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_set1
behavioral2/memory/2400-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1548-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1548	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 2400 wrote to memory of 1548	2400	2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe	87
PID 2400 wrote to memory of 1548	2400	2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe	87
PID 2400 wrote to memory of 1548	2400	2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_a82a0dc48769a0599722fc1db6c55e48_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1548

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
83KB

MD5
6556de0691e5cfb44e8bb6e615c8a738

SHA1
cec1f109c5fecfd73d9fca8bb94f61813dce7c1d

SHA256
1b59a47492d0daaf164100c2dcad0da4c70b991bd0e1d096bc4d7625973b72e8

SHA512
0fbd532f41e2f57434ea2bbf206693864f4db2655e9059f5309eb0274a36933bb4b958a8c56c5f70a36d3642be0bb0a514a027ea93233b3e86f4b8d689e44bd9

Download Submit
memory/1548-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/1548-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1548-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2400-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2400-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2400-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2400-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2400-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download