42ff85bcb60839c821a4b3101f081e18988eeddc639b710be9e179cc1f819908

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01-05-2024 10:45

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General

Target

2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe
Size

81KB
MD5

1049ec47aadeb1a5e2f1a8af4ce665d9
SHA1

109eae1dec4c5332e38a7ed35930e9457cc0a533
SHA256

42ff85bcb60839c821a4b3101f081e18988eeddc639b710be9e179cc1f819908
SHA512

b65d2ae719a524d5e6b7007d60c81ce05a7062fdf1a188f6a630f328f108e0d9c9481d8bf6999cc8a8feea2ebe588f21e3e08902e50bc10d536f3ebec95097b6
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNqS:vCjsIOtEvwDpj5H9YvQd2n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023b15-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023b15-12.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	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 1064 wrote to memory of 1988	1064	2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe	83
PID 1064 wrote to memory of 1988	1064	2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe	83
PID 1064 wrote to memory of 1988	1064	2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_1049ec47aadeb1a5e2f1a8af4ce665d9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1988

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
39568fb4bf4a939e348fdc2c446c56a3

SHA1
15a4b58cc3dee5700c06938f08ebb6c6a6a82f6a

SHA256
cffaf041e68541878d40c7cac9ca0a16d85dc71e1351ac16823f2b6e15f7bd54

SHA512
08839506a23892a935ccdbb474f22fec5f418203a7e60320457b2557c5554ba7382f13254b8436581c282ebd7fd5144fadaa4410e0e79a06dbaffadaad4f52f7

Download Submit
memory/1064-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1064-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1064-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1988-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1988-23-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download