ef523811b3073a1c58dc0043ff061d4f00addd087131780ee6228c6187288caf

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2023, 16:52

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General

Target

f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe
Size

92KB
MD5

f67bf274fd30b1e4b69f14fbc31d317e
SHA1

7f7ad422ac36c5585a19f5234c8e2cdb16337b22
SHA256

ef523811b3073a1c58dc0043ff061d4f00addd087131780ee6228c6187288caf
SHA512

4025741f759b7220819d8ebfe84271194428175bdc8476efb024b078aa8af4f3dee57375cd5b6f46c5675e810ae6c4edf2455a7cda4bc4ccedcd1d6e5a6f40b6
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp+ofZO:AnBdOOtEvwDpj6zh

Score

7^/10

upx

Malware Config

Signatures

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-1-5-21-4176143399-3250363947-192774652-1000\Control Panel\International\Geo\Nation	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4452	asih.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3336-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00060000000231d8-13.dat	upx
behavioral2/files/0x00060000000231d8-15.dat	upx
behavioral2/files/0x00060000000231d8-16.dat	upx
behavioral2/memory/3336-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4452-26-0x0000000000500000-0x000000000050F000-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 3336 wrote to memory of 4452	3336	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	81
PID 3336 wrote to memory of 4452	3336	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	81
PID 3336 wrote to memory of 4452	3336	f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe	81

C:\Users\Admin\AppData\Local\Temp\f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\f67bf274fd30b1e4b69f14fbc31d317e_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4452

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
92KB

MD5
ee788824c8ac77d30b25e8c81d9e8956

SHA1
845d53a7e0a30c086dd917392cd856c7cb8466d6

SHA256
7e1af767f58bf90be065f286d4e8f46bcd8f6e7bc8aaf7e1150d3abd90a42be2

SHA512
29a46a99d0b00fe183a9af965548a745977f618d71a93385325a96f9b32bc54fc12103ed1a47bea49b01320cbff62ef017f300e84b1af805e0e4c0732dc3ec47

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
92KB

MD5
ee788824c8ac77d30b25e8c81d9e8956

SHA1
845d53a7e0a30c086dd917392cd856c7cb8466d6

SHA256
7e1af767f58bf90be065f286d4e8f46bcd8f6e7bc8aaf7e1150d3abd90a42be2

SHA512
29a46a99d0b00fe183a9af965548a745977f618d71a93385325a96f9b32bc54fc12103ed1a47bea49b01320cbff62ef017f300e84b1af805e0e4c0732dc3ec47

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
92KB

MD5
ee788824c8ac77d30b25e8c81d9e8956

SHA1
845d53a7e0a30c086dd917392cd856c7cb8466d6

SHA256
7e1af767f58bf90be065f286d4e8f46bcd8f6e7bc8aaf7e1150d3abd90a42be2

SHA512
29a46a99d0b00fe183a9af965548a745977f618d71a93385325a96f9b32bc54fc12103ed1a47bea49b01320cbff62ef017f300e84b1af805e0e4c0732dc3ec47

Download Submit
memory/3336-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3336-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3336-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3336-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3336-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4452-19-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4452-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4452-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download