d3e524134b590421f39771f233310ac659d7731ad1c8fd5a3c68823a29e30575

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 00:36

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General

Target

2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe
Size

49KB
MD5

6bc526a8c96d6ed56493c1af7f865eb2
SHA1

9a6de8354f63b1d4e58eb92a30831a893a9d3de4
SHA256

d3e524134b590421f39771f233310ac659d7731ad1c8fd5a3c68823a29e30575
SHA512

b1c1d3c5714f52f46aeb7585c59972953f45d3aa67ad4ff578f87e8ba6f4068510102cea050b64eec2ebd2684cbfb26a6aefb93616d10a09217d91a5ef7f8988
SSDEEP

1536:nP+4zs2cPszL3MOtEvwDpj4Hy7B3g9CWuAxWLQZ:m4Q2ckzIOtEvwDpj4HYK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1552-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023170-13.dat	CryptoLocker_rule2
behavioral2/memory/1552-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4976-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1552-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4976-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1552-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000c000000023170-13.dat	UPX
behavioral2/memory/1552-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4976-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4976	misid.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1552-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000c000000023170-13.dat	upx
behavioral2/memory/1552-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4976-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1552 wrote to memory of 4976	1552	2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe	85
PID 1552 wrote to memory of 4976	1552	2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe	85
PID 1552 wrote to memory of 4976	1552	2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_6bc526a8c96d6ed56493c1af7f865eb2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4976

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
50KB

MD5
4c2d1dcd4ce2a3919ff36a9974305fa0

SHA1
94b32ccd354abf501225db3d2377c47c04e0581c

SHA256
004850916a52032d0992cff6b95c848626579709793e6d9f38929fe79b5608b4

SHA512
19182249150978d657231c37e6aa5e5bbf242466f3c2509b4a749edbf3202a4e736a2250d8bef903caa0dcb46432ee913ff5a74da721ec99ac059c22b753410f

Download Submit
memory/1552-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1552-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/1552-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/1552-3-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1552-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4976-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4976-21-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4976-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download