guloader | 1b8ffbc3d3aeca2e6b2cce02d2589a6fb12a2dcb6028f48f56243460bda232a6

General

Target

244625296-045056-sanlccjavap0003-9265.exe
Size

431KB
MD5

d69326f0086f5a1915e317d460851185
SHA1

da4889b4a866fccf18cc4d580995d4e491459207
SHA256

ce7202372e7e915e6cf9fb52e1ffe3083602f3a9b761f1d4b9e6045eabe065c1
SHA512

f559b5584bccd64ee5784b3016b113f99f588be71ac19fc4adac850b993240d7596c91d3e85bc50a5290dd76ac3db3df7911d608f3c678ac4188db9c9b4757a5
SSDEEP

12288:bchSe04fsdrsdA6zKY/h1kMPJIN5yUBowyx9fag6vB:bqSe04s+61Y/LkMRSwgoxyrvB

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot6478451606:AAFbKLDgEUUeIzZ7hQq9aJhHVTZpkPUZ2-Y/sendMessage?chat_id=6755467222

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 2 IoCs

pid	Process
628	244625296-045056-sanlccjavap0003-9265.exe
628	244625296-045056-sanlccjavap0003-9265.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	drive.google.com
3	drive.google.com

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
14	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2952	244625296-045056-sanlccjavap0003-9265.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
628	244625296-045056-sanlccjavap0003-9265.exe
2952	244625296-045056-sanlccjavap0003-9265.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31

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	244625296-045056-sanlccjavap0003-9265.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	244625296-045056-sanlccjavap0003-9265.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2952	244625296-045056-sanlccjavap0003-9265.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
628	244625296-045056-sanlccjavap0003-9265.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	244625296-045056-sanlccjavap0003-9265.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31
PID 628 wrote to memory of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31
PID 628 wrote to memory of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31
PID 628 wrote to memory of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31
PID 628 wrote to memory of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31
PID 628 wrote to memory of 2952	628	244625296-045056-sanlccjavap0003-9265.exe	31

C:\Users\Admin\AppData\Local\Temp\244625296-045056-sanlccjavap0003-9265.exe
"C:\Users\Admin\AppData\Local\Temp\244625296-045056-sanlccjavap0003-9265.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\244625296-045056-sanlccjavap0003-9265.exe
  "C:\Users\Admin\AppData\Local\Temp\244625296-045056-sanlccjavap0003-9265.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2952

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\nsoDE01.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/628-14-0x0000000003720000-0x0000000005CD4000-memory.dmp

Filesize
37.7MB

Download
memory/628-16-0x0000000077220000-0x00000000773C9000-memory.dmp

Filesize
1.7MB

Download
memory/628-15-0x0000000077221000-0x0000000077322000-memory.dmp

Filesize
1.0MB

Download
memory/628-17-0x0000000003720000-0x0000000005CD4000-memory.dmp

Filesize
37.7MB

Download
memory/2952-18-0x0000000077220000-0x00000000773C9000-memory.dmp

Filesize
1.7MB

Download
memory/2952-40-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2952-42-0x0000000000460000-0x00000000004AA000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing