e99c095d7e964c2ba0352b131847ec5dec681333e988203370e07f502a2927bb

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02/06/2024, 04:42

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General

Target

2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe
Size

44KB
MD5

0d77617cb1a68b0efa497959413e6fa6
SHA1

500c918047aa2a884a56d8d5646263b82a5bfec3
SHA256

e99c095d7e964c2ba0352b131847ec5dec681333e988203370e07f502a2927bb
SHA512

050af5abae93101bca78a869a4df73e6ce6cca90b0c733cc97a5041cd8a2d0b2c176c2167bde2f90c6f1b2a8a14013db02679456850d7dd09bbb0530d44d4121
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxh:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00090000000143d1-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x00090000000143d1-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2916	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1440	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_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
1440	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe
2916	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1440 wrote to memory of 2916	1440	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	28
PID 1440 wrote to memory of 2916	1440	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	28
PID 1440 wrote to memory of 2916	1440	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	28
PID 1440 wrote to memory of 2916	1440	2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_0d77617cb1a68b0efa497959413e6fa6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1440
- 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:2916

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
44KB

MD5
dada58d59be9231868416728be425d83

SHA1
a58181e5d8fe5e51d5b52cacc7ce70b7a4535a77

SHA256
cee1170d547050d2d56677ba6f4f7e28ece03c23c0bc7e6fb8236b923054dd1f

SHA512
ce75406d926be50e11290ec06d84bce1f7d9db03dba8fe24812d9fba3e78afb58829dcd662a3b7713873419bee40c69ca03d0646c2f470e0fb9c06de45b94c76

Download Submit
memory/1440-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1440-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1440-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2916-23-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download