guloader | 5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383

General

Target

Shave.exe
Size

536KB
MD5

51000c141b602569cf44b0f8bec9ecb8
SHA1

d7b819dbc26b3e66c99d233c5c7fc86492e626dd
SHA256

5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383
SHA512

8b38516298e15002a228424f926552b9abc06fb7fb0da94d78a48fea4c0a861fc5bdbcdf9db733f9644a480b4099d237cd70531b8afa11879562d71dd7ee2283
SSDEEP

6144:9lgvTRHy2nGlwzQ7LA+CB+f6tb9PTPgN++6aCUYvIRN3JGrYJfXvk0OFP2lmBLoE:32EI+CnhxC+JaWSRlXMPL6TEHmd3ZhZ8

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

Credentials

Protocol: smtp
Host:
mail.cipmach.com
Port:
587
Username:
[email protected]
Password:
mail@2019$
Email To:
[email protected]

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
stealer keylogger vipkeylogger
Vipkeylogger family
vipkeylogger

Loads dropped DLL 1 IoCs

pid	Process
2276	Shave.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1792	Shave.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2276	Shave.exe
1792	Shave.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2276 set thread context of 1792	2276	Shave.exe	28

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	Shave.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Shave.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Shave.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1792	Shave.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2276	Shave.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	Shave.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 1792	2276	Shave.exe	28
PID 2276 wrote to memory of 1792	2276	Shave.exe	28
PID 2276 wrote to memory of 1792	2276	Shave.exe	28
PID 2276 wrote to memory of 1792	2276	Shave.exe	28
PID 2276 wrote to memory of 1792	2276	Shave.exe	28
PID 2276 wrote to memory of 1792	2276	Shave.exe	28

C:\Users\Admin\AppData\Local\Temp\Shave.exe
"C:\Users\Admin\AppData\Local\Temp\Shave.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Users\Admin\AppData\Local\Temp\Shave.exe
  "C:\Users\Admin\AppData\Local\Temp\Shave.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nst9B66.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/1792-13-0x0000000077600000-0x00000000777A9000-memory.dmp

Filesize
1.7MB

Download
memory/1792-15-0x00000000007E0000-0x0000000001842000-memory.dmp

Filesize
16.4MB

Download
memory/1792-16-0x00000000007E0000-0x0000000001842000-memory.dmp

Filesize
16.4MB

Download
memory/1792-17-0x00000000007E0000-0x000000000082A000-memory.dmp

Filesize
296KB

Download
memory/2276-9-0x0000000003300000-0x0000000006293000-memory.dmp

Filesize
47.6MB

Download
memory/2276-10-0x0000000077601000-0x0000000077702000-memory.dmp

Filesize
1.0MB

Download
memory/2276-11-0x0000000003300000-0x0000000006293000-memory.dmp

Filesize
47.6MB

Download
memory/2276-12-0x0000000077600000-0x00000000777A9000-memory.dmp

Filesize
1.7MB

Download
memory/2276-14-0x0000000003300000-0x0000000006293000-memory.dmp

Filesize
47.6MB

Download

Analysis

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