1341f83fd7e8ed71461e54cea3f8d9f616df9be4a768570ffa2e671428e9b828

Analysis

max time kernel
176s
max time network
197s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 11:33

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General

Target

2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe
Size

101KB
MD5

28caad1c87ffe125aa3e0587bb80dd69
SHA1

6ccf913463bbaf946df666f684e9c0aacea995b8
SHA256

1341f83fd7e8ed71461e54cea3f8d9f616df9be4a768570ffa2e671428e9b828
SHA512

0a1be73c1f7a4b6f53879f77d498a667c4d3ead8c6507a77681f01068d4bd2417ebc94bdf492d4bf4a2988b982482ce4fca61c2a62e528731685af79c5ab6aa1
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMOE:xj+VGMOtEvwDpjubwQEIiVmkxv/zE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4124-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023229-13.dat	CryptoLocker_rule2
behavioral2/memory/4124-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2164-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4124-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023229-13.dat	CryptoLocker_set1
behavioral2/memory/4124-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2164-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4124-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0006000000023229-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4124-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2164-26-0x0000000000500000-0x0000000000510000-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-1-5-21-3538781373-1545967067-4263767959-1000\Control Panel\International\Geo\Nation	2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2164	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 4124 wrote to memory of 2164	4124	2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe	93
PID 4124 wrote to memory of 2164	4124	2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe	93
PID 4124 wrote to memory of 2164	4124	2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_28caad1c87ffe125aa3e0587bb80dd69_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4124
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2164

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
101KB

MD5
3a649b455c2c47badbe19b2e2d4867e3

SHA1
9d4a20a65aa5f2bbfbc85c0e17fb3d1c8adc2307

SHA256
cb72cf985995db3d813306e910fd8bc1e3912a89d7b4dbda8db5a32df5999aa3

SHA512
b2e71d21c92ab266ec3516e734e3952c9ce060589867b4eb8fbac746f08b23da292ceac5d1080116de271c9e5a2f81659a4ee8e328e198ad7813bff8300d6219

Download Submit
memory/2164-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2164-21-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2164-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4124-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4124-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4124-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4124-3-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4124-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download