b910b63a9237bff2e16e1ad2371e2a35c82a6894f8aa037310dc27036e48080e

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 21:26

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General

Target

2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe
Size

81KB
MD5

12f296a88b9f54bc2100c11b32d87664
SHA1

93a1e396ad4e61e26459d7f49c440fba1d573fd8
SHA256

b910b63a9237bff2e16e1ad2371e2a35c82a6894f8aa037310dc27036e48080e
SHA512

5877fd06855180776b8dbd8ec7b17bb05259ad1868befc5dfcdbf4e39747ac960a5708d6922ea0d8f0d461904de3f0c44a7c943089dd98d9edb95e93b5fcbd58
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMW83:TCjsIOtEvwDpj5HE/OUHnSMn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1048-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_rule2
behavioral2/memory/1048-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3016-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1048-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_set1
behavioral2/memory/1048-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3016-26-0x0000000000500000-0x000000000050E000-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3016	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 1048 wrote to memory of 3016	1048	2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe	91
PID 1048 wrote to memory of 3016	1048	2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe	91
PID 1048 wrote to memory of 3016	1048	2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_12f296a88b9f54bc2100c11b32d87664_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

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
422d9dfb9c99eed516ff59197dc01d4d

SHA1
4cc49bed441b59bbf2a114a4d4ea1c519fd3a0de

SHA256
4f61bf21871a79cfc2242eb8b15ddb093f078f42af3fcff00d7a8a71ab4cbc67

SHA512
e5aa3316ec49a316453d5ce9dac210dddd14fd91537715dca53dfd2eb8a29fa6ec31704a7648845ec956de118ade9d5b33e61995215f81e6f9ffe25644390997

Download Submit
memory/1048-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1048-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1048-2-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1048-3-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1048-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3016-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3016-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download