bbbf02c3466c7aeb05dc89aba64c1e75897f4a68be083bc434ac1bc651c59b60

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
05/04/2024, 19:44

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General

Target

2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe
Size

36KB
MD5

06079a0ead3794745d7390088f559460
SHA1

e54168e2d86f4ad9b320cd69e130a462ef8a0d36
SHA256

bbbf02c3466c7aeb05dc89aba64c1e75897f4a68be083bc434ac1bc651c59b60
SHA512

d4f293b8f6bab05bd5f3bd99fc8116ebfe9ab82648d631d9b97f133728571aa691327d79e4f6a3da5ba88fa1f6e82ec06a2cb0d9ea2ea0db54892afd528120ab
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/Dpk4P:qDdFJy3QMOtEvwDpjjWMlBP

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1000-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f2-13.dat	CryptoLocker_rule2
behavioral2/memory/1000-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5112-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1000-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231f2-13.dat	CryptoLocker_set1
behavioral2/memory/1000-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5112-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1000-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00080000000231f2-13.dat	UPX
behavioral2/memory/1000-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/5112-26-0x0000000000500000-0x0000000000510000-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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5112	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1000-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00080000000231f2-13.dat	upx
behavioral2/memory/1000-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/5112-26-0x0000000000500000-0x0000000000510000-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 1000 wrote to memory of 5112	1000	2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe	87
PID 1000 wrote to memory of 5112	1000	2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe	87
PID 1000 wrote to memory of 5112	1000	2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_06079a0ead3794745d7390088f559460_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5112

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
36KB

MD5
f8393f12ab68419e050720583557a8f6

SHA1
1233a3535a19485674f4b718eec6281e685023ce

SHA256
2daa081f215e95162196e765c38fc9d102cf0b12aa62fcd2c4a2a0536ebd14a1

SHA512
39f519da63f8444c712a74442e90b1b91783ea93cb3cb95263c947545025f19732ed78e1b99b860d912e6902334231dd76c71a198a9398e3e946768600160374

Download Submit
memory/1000-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1000-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1000-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1000-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1000-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5112-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/5112-21-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/5112-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download