0de5c33c9ded8770b2d95f0bf28b75c602848a30726fd4fe621f7859f46c1e9c

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20-03-2024 01:26

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General

Target

2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe
Size

81KB
MD5

de397b585c6326e970f2e4f7182cde74
SHA1

896af1b5d480e34c13699aece031a0a1c0421dc1
SHA256

0de5c33c9ded8770b2d95f0bf28b75c602848a30726fd4fe621f7859f46c1e9c
SHA512

4f198437411ab38855e4ae7188de4fd5154b96d3389d38d913aed47a346bfe12bbde735fa02cc63aa444c3fc07fbf2186e2b1b1f7528441477aab2b296a1eb56
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrs:TCjsIOtEvwDpj5HE/OUHnSMy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023231-13.dat	CryptoLocker_rule2
behavioral2/memory/4292-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2180-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4292-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023231-13.dat	CryptoLocker_set1
behavioral2/memory/4292-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2180-26-0x0000000000500000-0x000000000050E000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2180	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 4292 wrote to memory of 2180	4292	2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe	89
PID 4292 wrote to memory of 2180	4292	2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe	89
PID 4292 wrote to memory of 2180	4292	2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-20_de397b585c6326e970f2e4f7182cde74_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2180

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
81KB

MD5
5bc3629f8469c92586c8d1e4e5b8c78c

SHA1
78341db1c0ff61d7bd8231259029fbcca4a62cfe

SHA256
f7f9d1f865010280457d74e8f58a8d3828549fafb3abe8fa7f0d20fd570cce07

SHA512
b6f069d2201a8ce0d9ba67707c420360db558d2ae5e9e9cce5f5c8b89e84511eb987630f3a3d70ce1eb6e081adcaa14c7120c3a614c304b7a328ae077fa8b534

Download Submit
memory/2180-20-0x0000000001F10000-0x0000000001F16000-memory.dmp

Filesize
24KB

Download
memory/2180-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/2180-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4292-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4292-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4292-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4292-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4292-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download