2ad43e33b631711d14550be989282ec5d0e09f0e903c2fbf5353c51977fedea8

Analysis

max time kernel
143s
max time network
170s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
31-10-2023 15:42

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General

Target

NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe
Size

39KB
MD5

fd2000fed9e82e9bf455c69b5817d313
SHA1

6b102736798e6602faf6272fa531597a185c3444
SHA256

2ad43e33b631711d14550be989282ec5d0e09f0e903c2fbf5353c51977fedea8
SHA512

e8bf85e2fc1da456f623c5132967775b168d2ff678cb19ac1a1048e0f2770ee5439d2062008ba0fc0dbfa45315e786e8990113d1fab44daa52773946ba185df0
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwz:bc/y2lm6Y0AqJ51mwz

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2752	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2832	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.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
2832	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe
2752	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2832 wrote to memory of 2752	2832	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	27
PID 2832 wrote to memory of 2752	2832	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	27
PID 2832 wrote to memory of 2752	2832	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	27
PID 2832 wrote to memory of 2752	2832	NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe	27

C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_fd2000fed9e82e9bf455c69b5817d313_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2752

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

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
40KB

MD5
0c3b3c446b9ecb8f201996863236d2c6

SHA1
e7a5dd97f01816491512f8b283ab57141b5fc49a

SHA256
cbdb7dc203a162ede7d4b8e7ae85f56bc7bbc1181b87f1d366c98f9675345d0c

SHA512
f52af1219058262cda93df7c482e64bf592a534948cbac6c5913ddc789ec1cbf87584bac6f5e65c7dcb56974ab73f25f597ffa95b21c5dd69c837f1deefedc3d

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

Filesize
40KB

MD5
0c3b3c446b9ecb8f201996863236d2c6

SHA1
e7a5dd97f01816491512f8b283ab57141b5fc49a

SHA256
cbdb7dc203a162ede7d4b8e7ae85f56bc7bbc1181b87f1d366c98f9675345d0c

SHA512
f52af1219058262cda93df7c482e64bf592a534948cbac6c5913ddc789ec1cbf87584bac6f5e65c7dcb56974ab73f25f597ffa95b21c5dd69c837f1deefedc3d

Download Submit
\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
40KB

MD5
0c3b3c446b9ecb8f201996863236d2c6

SHA1
e7a5dd97f01816491512f8b283ab57141b5fc49a

SHA256
cbdb7dc203a162ede7d4b8e7ae85f56bc7bbc1181b87f1d366c98f9675345d0c

SHA512
f52af1219058262cda93df7c482e64bf592a534948cbac6c5913ddc789ec1cbf87584bac6f5e65c7dcb56974ab73f25f597ffa95b21c5dd69c837f1deefedc3d

Download Submit
memory/2752-17-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2832-0-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2832-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2832-1-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download