993d5c521f70f44225b456699336c3513de46c94c17d4beb907045642f2e10dd

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 03:45

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General

Target

2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe
Size

37KB
MD5

4bc03cbb478abd5e0be9aca7149450bb
SHA1

dad662f83905695a9d9c6059ef97f211354f289e
SHA256

993d5c521f70f44225b456699336c3513de46c94c17d4beb907045642f2e10dd
SHA512

dc3cd41fd998ab2e3cbc38133b6114e253347c89b3ffbf884989e221521809d51252e1309f713c549c205aa3b1508feb260082d3e27d99edf3d28e6c28a3ac5b
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0X/EIjxua6s2:b/yC4GyNM01GuQMNXw2PSjH+PPxAs2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001226b-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2924	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2992	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_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
2992	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe
2924	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2924	2992	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	28
PID 2992 wrote to memory of 2924	2992	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	28
PID 2992 wrote to memory of 2924	2992	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	28
PID 2992 wrote to memory of 2924	2992	2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_4bc03cbb478abd5e0be9aca7149450bb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2924

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\retln.exe

Filesize
37KB

MD5
26143f6c6c7032de9ae23df1811b760d

SHA1
9ecc7f4904b6ecfdc044ab262b7e1a26dbeaed6d

SHA256
76189b5613d760a0ba758b2239d7d94503a467ad4280eef8ae30d030330a69a8

SHA512
dc8cc2716e2fb23a7c89b21a49808f4607348101dfcfc8fc3f7d2bc4097e383e2f48c68a8cbfb99f4de0db9afa30d944f9e60fb34c9d5e17df39c8713f1a294a

Download Submit
memory/2924-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2992-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2992-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2992-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download