55043ebd76ef39827884eb8754fa927d8445ebcb396155c335da4bc92fbbf581

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2024 07:29

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General

Target

2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe
Size

76KB
MD5

826de93d0221cf8cf4c76cd860f9e7df
SHA1

8a74e59d5f301ff7d330155752e6ab512f35562e
SHA256

55043ebd76ef39827884eb8754fa927d8445ebcb396155c335da4bc92fbbf581
SHA512

fa4d26838dacadfcb5192a25bbf0110145420e2dab409b2826237e20d671a1b7c64f58afb8e706da3ffe6d36c3cdce74c622672d0d78c2c06588c91f36519032
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLk/:X6a+SOtEvwDpjBZYvQd2g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.dat	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4704	asih.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 4672 wrote to memory of 4704	4672	2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe	80
PID 4672 wrote to memory of 4704	4672	2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe	80
PID 4672 wrote to memory of 4704	4672	2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_826de93d0221cf8cf4c76cd860f9e7df_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4672
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4704

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\asih.exe

Filesize
76KB

MD5
28a3b1299973f556bbbce538c9893860

SHA1
8d8a4eda3cf76ea6f4155cdf969b816e350fa84c

SHA256
4d63d4bee080374697357c55c599a9a463d14333e80c3bb34db9aa12fe565211

SHA512
2dd9891abe85d7f6d507997c1acc4326fe7917e5bf17b6be3a02ab01943eff7e50096280b34ca39d5c1a8b26046ad865afb2937974db98342e3c154d2c54154c

Download Submit
memory/4672-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4672-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4672-7-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4704-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4704-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download