guloader | ce7202372e7e915e6cf9fb52e1ffe3083602f3a9b761f1d4b9e6045eabe065c1

General

Target

021337ISOGENERAL.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
2716	021337ISOGENERAL.exe
2716	021337ISOGENERAL.exe

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

Web Service

T1102

flow	ioc
16	drive.google.com
17	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
29	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4940	021337ISOGENERAL.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2716	021337ISOGENERAL.exe
4940	021337ISOGENERAL.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 4940	2716	021337ISOGENERAL.exe	83

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
456	4940	WerFault.exe	83

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	021337ISOGENERAL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	021337ISOGENERAL.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4940	021337ISOGENERAL.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2716	021337ISOGENERAL.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	021337ISOGENERAL.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 4940	2716	021337ISOGENERAL.exe	83
PID 2716 wrote to memory of 4940	2716	021337ISOGENERAL.exe	83
PID 2716 wrote to memory of 4940	2716	021337ISOGENERAL.exe	83
PID 2716 wrote to memory of 4940	2716	021337ISOGENERAL.exe	83
PID 2716 wrote to memory of 4940	2716	021337ISOGENERAL.exe	83

C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.exe
"C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.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:2716
- C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.exe
  "C:\Users\Admin\AppData\Local\Temp\021337ISOGENERAL.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4940
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4940 -s 2272
    3⤵
    - Program crash
    PID:456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4940 -ip 4940
1⤵
PID:1372

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsf87CE.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/2716-12-0x0000000004090000-0x0000000006644000-memory.dmp

Filesize
37.7MB

Download
memory/2716-13-0x00000000775B1000-0x00000000776D1000-memory.dmp

Filesize
1.1MB

Download
memory/2716-14-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/2716-15-0x0000000004090000-0x0000000006644000-memory.dmp

Filesize
37.7MB

Download
memory/4940-16-0x00000000016C0000-0x0000000003C74000-memory.dmp

Filesize
37.7MB

Download
memory/4940-29-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4940-30-0x0000000000460000-0x00000000004AA000-memory.dmp

Filesize
296KB

Download
memory/4940-31-0x0000000036A10000-0x0000000036FB4000-memory.dmp

Filesize
5.6MB

Download
memory/4940-32-0x00000000345E0000-0x000000003467C000-memory.dmp

Filesize
624KB

Download
memory/4940-34-0x00000000016C0000-0x0000000003C74000-memory.dmp

Filesize
37.7MB

Download

Analysis

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