vanillarat | 6957a1d41318c04e7086774c6822dff2684a62300ece32225e1080cd0acc8a49

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20230705-en
resource tags

arch:x64arch:x86image:win7-20230705-enlocale:en-usos:windows7-x64system
submitted
10-07-2023 19:04

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General

Target

downloadexeexeexe.exe
Size

114KB
MD5

3d31c31ef4a60bf94a3d70abc8c6dfe3
SHA1

03912837c3f31bcd0c6f0c2aaa68cd3535d8cc99
SHA256

6957a1d41318c04e7086774c6822dff2684a62300ece32225e1080cd0acc8a49
SHA512

5ba7dd53e3b4af4442b8f33d8882b19698fb6c9262b5bc2fcbc6841b8ce9cc85c9e7eea8a317358aba9849fd33d86c82abf39bc6d44f8b9b98a7cd93b5baeed1
SSDEEP

3072:AJZKnPE2YyJzELtyTRyYeY8lNgoiJ+sX8HFvytbwN4:AJZKBI0RyYeY4eoiJ+sCFvj

Score

10^/10

vanillarat persistence rat

Malware Config

Signatures

VanillaRat
VanillaRat is an advanced remote administration tool coded in C#.
rat vanillarat

Vanilla Rat payload 8 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/3040-54-0x0000000000C80000-0x0000000000CA2000-memory.dmp	vanillarat
behavioral1/memory/3040-55-0x0000000004950000-0x0000000004990000-memory.dmp	vanillarat
\Users\Admin\AppData\Roaming\downloadexeexeexe.exe	vanillarat
C:\Users\Admin\AppData\Roaming\downloadexeexeexe.exe	vanillarat
C:\Users\Admin\AppData\Roaming\downloadexeexeexe.exe	vanillarat
behavioral1/memory/340-63-0x0000000000180000-0x00000000001A2000-memory.dmp	vanillarat
behavioral1/memory/340-64-0x0000000004A90000-0x0000000004AD0000-memory.dmp	vanillarat
behavioral1/memory/340-65-0x0000000004A90000-0x0000000004AD0000-memory.dmp	vanillarat

Executes dropped EXE 1 IoCs

Processes:

downloadexeexeexe.exe

pid process

340 downloadexeexeexe.exe
Loads dropped DLL 1 IoCs

Processes:

downloadexeexeexe.exe

pid process

3040 downloadexeexeexe.exe

pid	process
340	downloadexeexeexe.exe

pid	process
3040	downloadexeexeexe.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

downloadexeexeexe.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000\Software\Microsoft\Windows\CurrentVersion\Run\downloadexeexeexe = "C:\\Users\\Admin\\AppData\\Roaming\\downloadexeexeexe.exe"	downloadexeexeexe.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

downloadexeexeexe.exe

description pid process

Token: SeDebugPrivilege 3040 downloadexeexeexe.exe

description	pid	process
Token: SeDebugPrivilege	3040	downloadexeexeexe.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

downloadexeexeexe.exe

description	pid	process	target process
PID 3040 wrote to memory of 340	3040	downloadexeexeexe.exe	downloadexeexeexe.exe
PID 3040 wrote to memory of 340	3040	downloadexeexeexe.exe	downloadexeexeexe.exe
PID 3040 wrote to memory of 340	3040	downloadexeexeexe.exe	downloadexeexeexe.exe
PID 3040 wrote to memory of 340	3040	downloadexeexeexe.exe	downloadexeexeexe.exe

C:\Users\Admin\AppData\Local\Temp\downloadexeexeexe.exe
"C:\Users\Admin\AppData\Local\Temp\downloadexeexeexe.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Roaming\downloadexeexeexe.exe
  "C:\Users\Admin\AppData\Roaming\downloadexeexeexe.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:340

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\downloadexeexeexe.exe

Filesize
114KB

MD5
3d31c31ef4a60bf94a3d70abc8c6dfe3

SHA1
03912837c3f31bcd0c6f0c2aaa68cd3535d8cc99

SHA256
6957a1d41318c04e7086774c6822dff2684a62300ece32225e1080cd0acc8a49

SHA512
5ba7dd53e3b4af4442b8f33d8882b19698fb6c9262b5bc2fcbc6841b8ce9cc85c9e7eea8a317358aba9849fd33d86c82abf39bc6d44f8b9b98a7cd93b5baeed1

Download Submit
C:\Users\Admin\AppData\Roaming\downloadexeexeexe.exe

Filesize
114KB

MD5
3d31c31ef4a60bf94a3d70abc8c6dfe3

SHA1
03912837c3f31bcd0c6f0c2aaa68cd3535d8cc99

SHA256
6957a1d41318c04e7086774c6822dff2684a62300ece32225e1080cd0acc8a49

SHA512
5ba7dd53e3b4af4442b8f33d8882b19698fb6c9262b5bc2fcbc6841b8ce9cc85c9e7eea8a317358aba9849fd33d86c82abf39bc6d44f8b9b98a7cd93b5baeed1

Download Submit
\Users\Admin\AppData\Roaming\downloadexeexeexe.exe

Filesize
114KB

MD5
3d31c31ef4a60bf94a3d70abc8c6dfe3

SHA1
03912837c3f31bcd0c6f0c2aaa68cd3535d8cc99

SHA256
6957a1d41318c04e7086774c6822dff2684a62300ece32225e1080cd0acc8a49

SHA512
5ba7dd53e3b4af4442b8f33d8882b19698fb6c9262b5bc2fcbc6841b8ce9cc85c9e7eea8a317358aba9849fd33d86c82abf39bc6d44f8b9b98a7cd93b5baeed1

Download Submit
memory/340-63-0x0000000000180000-0x00000000001A2000-memory.dmp

Filesize
136KB

Download
memory/340-64-0x0000000004A90000-0x0000000004AD0000-memory.dmp

Filesize
256KB

Download
memory/340-65-0x0000000004A90000-0x0000000004AD0000-memory.dmp

Filesize
256KB

Download
memory/3040-54-0x0000000000C80000-0x0000000000CA2000-memory.dmp

Filesize
136KB

Download
memory/3040-55-0x0000000004950000-0x0000000004990000-memory.dmp

Filesize
256KB

Download