188df6f3dde722f403acd4dfe3f9fb21189aeeb0a0b0b8e98e3a9e2f33c0c4d2

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
04-05-2024 20:26

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General

Target

2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe
Size

36KB
MD5

3f90aab4fdb30c7927f339d14d1b5e84
SHA1

4ff3caa8629bc78b68b96fc5359e12f063a7c72c
SHA256

188df6f3dde722f403acd4dfe3f9fb21189aeeb0a0b0b8e98e3a9e2f33c0c4d2
SHA512

ba1c9971b96fb7c9a4e9eb49cca7ebf08358efc818e07501936d810a04768c436de96409a268643c6afb0863b5f5eab3beae430d42a090bd4bc0060d338835e4
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0C:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000015cbd-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000015cbd-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2552	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2972	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_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
2972	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe
2552	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2552	2972	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	28
PID 2972 wrote to memory of 2552	2972	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	28
PID 2972 wrote to memory of 2552	2972	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	28
PID 2972 wrote to memory of 2552	2972	2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_3f90aab4fdb30c7927f339d14d1b5e84_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2972
- 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:2552

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
36KB

MD5
bb66502a25d9ac8335f30040eb9d61c6

SHA1
dc3ab7fde4a765ee23baabad154688994ee3141a

SHA256
15f05432fe56d5b0a3492b203fe6193a25ba5e1fc6b4e9c9a21c7bac2db81e40

SHA512
b2fc89bf3aa4b03a985a4d36e9143a95b08e9c421d73041241aada537e02ebd7fc9d755d3988840e8cb4284c94ebb5c165bb109e09a06022728c87d90ce2cc9b

Download Submit
memory/2552-23-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2972-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2972-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2972-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download