e21da9d618cb9f96f516f8144996709e72c8be39bd0e88ec3b1d74104ea427f8

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
10/03/2024, 19:48

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General

Target

2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe
Size

86KB
MD5

5f4e44dc44598b55c11d0cedcc2c2cce
SHA1

e61072c65dce52e60bb260353b13f097f736f292
SHA256

e21da9d618cb9f96f516f8144996709e72c8be39bd0e88ec3b1d74104ea427f8
SHA512

4d7e457634024f150bb4eba02704665670413a54a3ce4b506b3d2bda1d53ebedf86e395c87da4258a3cecc2677eb7f6e80700aae1f611d33ac626800ba2789c9
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvzkxrG:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8zB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4820-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/2316-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4820-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2316-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4820-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2316-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4820-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000400000001e5eb-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2316-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4820-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2316-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	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 4820 wrote to memory of 2316	4820	2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe	89
PID 4820 wrote to memory of 2316	4820	2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe	89
PID 4820 wrote to memory of 2316	4820	2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_5f4e44dc44598b55c11d0cedcc2c2cce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2316

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
86KB

MD5
41280cde6d093e98a673ccad0d07626d

SHA1
d106f0ae5aff5bf0ee31b1af3a4b46e00aa06087

SHA256
bdc6cdd92fe5260123df8c6cc89a61838d5ebdd79d1ef178cc7f6e5a92c9333a

SHA512
75515ea81bd9b966322bd72835bfc894bbc92690d021a0d45125ca673773276a6fd6f342bccf58e4ab319d8e1400348d88cc6a0a827f6655e227b86e04fa2679

Download Submit
memory/2316-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2316-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2316-21-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/2316-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4820-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4820-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4820-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4820-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4820-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download