guloader | 6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4

General

Target

6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe
Size

784KB
MD5

d5124313ebf51a883392d6171e9b7049
SHA1

72c137198f1893be9f5a73a89967889895160117
SHA256

6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4
SHA512

dfda9be5f1641ab3567f483cb80d340fefa30ec893ba9af42d687726f8ef07d2ee7457ae45a10e3f6d087206693e01239f2c3ec3e9aaa23b9dab21f371c453fd
SSDEEP

12288:I5gGipxkBKTBX7yFUJFLoEaOAUGsoj5eTZa86q+gdD3/86DtrmT9cPfRNLiyi7TH:5GiwB4NyF8olhRj5eKq+Y/gcHv+yIdv

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7500341588:AAHsqawFdC2urnq1E6blZy5E3r-OiJvH9ZA/sendMessage?chat_id=7267131103

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
1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

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

Web Service

T1102

flow	ioc
3	drive.google.com
5	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
2660	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe
2660	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1088 set thread context of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\rollerskater.lnk	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe
File opened for modification	C:\Program Files (x86)\rollerskater.lnk	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.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	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2660	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31
PID 1088 wrote to memory of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31
PID 1088 wrote to memory of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31
PID 1088 wrote to memory of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31
PID 1088 wrote to memory of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31
PID 1088 wrote to memory of 2660	1088	6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe	31

C:\Users\Admin\AppData\Local\Temp\6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe
"C:\Users\Admin\AppData\Local\Temp\6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Users\Admin\AppData\Local\Temp\6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe
  "C:\Users\Admin\AppData\Local\Temp\6aa4aecddd8e0ffc3b3cee5987c88d34eb7cb048cb5a42983b2b223875182bd4.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660

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

\Users\Admin\AppData\Local\Temp\nsy19F7.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/1088-15-0x0000000003820000-0x00000000047E3000-memory.dmp

Filesize
15.8MB

Download
memory/1088-16-0x00000000771C1000-0x00000000772C2000-memory.dmp

Filesize
1.0MB

Download
memory/1088-17-0x00000000771C0000-0x0000000077369000-memory.dmp

Filesize
1.7MB

Download
memory/1088-18-0x0000000003820000-0x00000000047E3000-memory.dmp

Filesize
15.8MB

Download
memory/2660-19-0x00000000771C0000-0x0000000077369000-memory.dmp

Filesize
1.7MB

Download
memory/2660-41-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2660-42-0x0000000000480000-0x00000000004C8000-memory.dmp

Filesize
288KB

Download

Analysis

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