7df21ce5bdb44c0e3b2c71051a60c64b8adcfb9d27ae86dda4528f2bb26eb57c

Analysis

max time kernel
151s
max time network
155s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 08:46

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General

Target

2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe
Size

42KB
MD5

f4ef363acf78ac84278ee746a23b9ba3
SHA1

06c5b3b8e5c04abc459338d50c33442e3ae3651b
SHA256

7df21ce5bdb44c0e3b2c71051a60c64b8adcfb9d27ae86dda4528f2bb26eb57c
SHA512

c631ec1a30daedb3da58ebd95e427bb295e31509aa0edfeea4c56b831365dc921a78ad9eeda0e94c77493e483259796ac6a5b87628c149113e7ce07deb34f77d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxz:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014237-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014237-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2668	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1340	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1340	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe
2668	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 2668	1340	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	28
PID 1340 wrote to memory of 2668	1340	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	28
PID 1340 wrote to memory of 2668	1340	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	28
PID 1340 wrote to memory of 2668	1340	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
43KB

MD5
67b661561e8b2a132f861f96a1fe6b4a

SHA1
f3ae9d00b4073b87c42bee83d178a92908fc38a3

SHA256
a447b61b0c16cec4a547b8a6cae5dbab84f48900c1875ae66b4762ad0b12e13b

SHA512
530c69ac4dd1be9e71690bf3d58d14b9848bcc15c52930242bd150e289cc85a54e18d86dcfcdad99a84b356e1b2c631bd5986fb713187a5fbd0e3e5a93a3a02e

Download Submit
memory/1340-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1340-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1340-2-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2668-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download