cryptolocker | d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9

General

Target

{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe
Size

338KB
MD5

04fb36199787f2e3e2135611a38321eb
SHA1

65559245709fe98052eb284577f1fd61c01ad20d
SHA256

d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512

533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444

Score

10^/10

cryptolocker persistence ransomware suricata

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
suricata: ET MALWARE Possible Zeus GameOver/FluBot Related DGA NXDOMAIN Responses
suricata: ET MALWARE Possible Zeus GameOver/FluBot Related DGA NXDOMAIN Responses
suricata

Executes dropped EXE 2 IoCs

pid	Process
2000	{34184A33-0407-212E-3320-09040709E2C2}.exe
1648	{34184A33-0407-212E-3320-09040709E2C2}.exe

Deletes itself 1 IoCs

pid	Process
2000	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 1 IoCs

pid	Process
1928	{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run	{34184A33-0407-212E-3320-09040709E2C2}.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2000	1928	{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe	27
PID 1928 wrote to memory of 2000	1928	{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe	27
PID 1928 wrote to memory of 2000	1928	{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe	27
PID 1928 wrote to memory of 2000	1928	{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe	27
PID 2000 wrote to memory of 1648	2000	{34184A33-0407-212E-3320-09040709E2C2}.exe	28
PID 2000 wrote to memory of 1648	2000	{34184A33-0407-212E-3320-09040709E2C2}.exe	28
PID 2000 wrote to memory of 1648	2000	{34184A33-0407-212E-3320-09040709E2C2}.exe	28
PID 2000 wrote to memory of 1648	2000	{34184A33-0407-212E-3320-09040709E2C2}.exe	28

C:\Users\Admin\AppData\Local\Temp\{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe
"C:\Users\Admin\AppData\Local\Temp\{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
  "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\{71257279-042b-371d-a1d3-fbf8d2fadffa}.exe"
  2⤵
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2000
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000C8
    3⤵
    - Executes dropped EXE
    PID:1648

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
338KB

MD5
04fb36199787f2e3e2135611a38321eb

SHA1
65559245709fe98052eb284577f1fd61c01ad20d

SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9

SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444

Download Submit
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
338KB

MD5
04fb36199787f2e3e2135611a38321eb

SHA1
65559245709fe98052eb284577f1fd61c01ad20d

SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9

SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444

Download Submit
\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
338KB

MD5
04fb36199787f2e3e2135611a38321eb

SHA1
65559245709fe98052eb284577f1fd61c01ad20d

SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9

SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444

Download Submit
memory/1928-54-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

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