guloader | 0b7ba80811d300aefe42de77b7b8fb2d5b6f9a8d4f2cf3d1213b6fead5efb59b

General

Target

Fa24c148.exe
Size

981KB
MD5

7644ebbf786053ffaf95dbe86b7de5d4
SHA1

5d563fb10f6d71049ae5f69fb6ccb9f2217ddf32
SHA256

0b7ba80811d300aefe42de77b7b8fb2d5b6f9a8d4f2cf3d1213b6fead5efb59b
SHA512

d2da4f4ce1d26aca8e497e0d889d34ce9a4ec06b50245eb29a1feb7c7c20fce281e0dbefa37d234230163ebeaa602f1a49edee312024628387d2759896434a3c
SSDEEP

24576:ynE9Wlvj9UENDYuRe5In2hINGct2YBD9w254CQ+K1Q:yEiJUTOn2hINGctTDOBC7

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot8148338634:AAFvLNrhxaF7bMPzQMLbUnueRMJvDIi5kcU/sendMessage?chat_id=7698865320

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
2336	Fa24c148.exe

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

Web Service

T1102

flow	ioc
4	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
1772	Fa24c148.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2336	Fa24c148.exe
1772	Fa24c148.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 1772	2336	Fa24c148.exe	31

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\olieaffald\Unconsummative103.pro	Fa24c148.exe
File opened for modification	C:\Windows\rocksanger\noninfluential.ini	Fa24c148.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	Fa24c148.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Fa24c148.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1772	Fa24c148.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2336	Fa24c148.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	Fa24c148.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 1772	2336	Fa24c148.exe	31
PID 2336 wrote to memory of 1772	2336	Fa24c148.exe	31
PID 2336 wrote to memory of 1772	2336	Fa24c148.exe	31
PID 2336 wrote to memory of 1772	2336	Fa24c148.exe	31
PID 2336 wrote to memory of 1772	2336	Fa24c148.exe	31
PID 2336 wrote to memory of 1772	2336	Fa24c148.exe	31

C:\Users\Admin\AppData\Local\Temp\Fa24c148.exe
"C:\Users\Admin\AppData\Local\Temp\Fa24c148.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:2336
- C:\Users\Admin\AppData\Local\Temp\Fa24c148.exe
  "C:\Users\Admin\AppData\Local\Temp\Fa24c148.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1772

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\nst19D8.tmp\System.dll

Filesize
11KB

MD5
fc90dfb694d0e17b013d6f818bce41b0

SHA1
3243969886d640af3bfa442728b9f0dff9d5f5b0

SHA256
7fe77ca13121a113c59630a3dba0c8aaa6372e8082393274da8f8608c4ce4528

SHA512
324f13aa7a33c6408e2a57c3484d1691ecee7c3c1366de2bb8978c8dc66b18425d8cab5a32d1702c13c43703e36148a022263de7166afdce141da2b01169f1c6

Download Submit
memory/1772-18-0x0000000077A50000-0x0000000077BF9000-memory.dmp

Filesize
1.7MB

Download
memory/1772-20-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download
memory/1772-40-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download
memory/1772-41-0x00000000004A0000-0x00000000004E8000-memory.dmp

Filesize
288KB

Download
memory/1772-42-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download
memory/2336-14-0x0000000003A20000-0x0000000004FE3000-memory.dmp

Filesize
21.8MB

Download
memory/2336-15-0x0000000003A20000-0x0000000004FE3000-memory.dmp

Filesize
21.8MB

Download
memory/2336-16-0x0000000077A51000-0x0000000077B52000-memory.dmp

Filesize
1.0MB

Download
memory/2336-17-0x0000000077A50000-0x0000000077BF9000-memory.dmp

Filesize
1.7MB

Download
memory/2336-19-0x0000000003A20000-0x0000000004FE3000-memory.dmp

Filesize
21.8MB

Download

Analysis

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