guloader | dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16

General

Target

dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
Size

575KB
MD5

09f7f6f3e306a2909543d9ac199c7c0a
SHA1

3cbef0b139ee88916c063c2375b9ae4150ff4a4a
SHA256

dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16
SHA512

98d0becf921388a270d62361f772a493f83aaa9c839bfa80584ffd9307969b05147b1d309f4bd51dd86aaedafb1407e7c392ce6f8d3be53e9e5ece7064eac1de
SSDEEP

12288:Gk2YLS3JInQZNEjCxOV4AAm3R3W6TRVZdMN:TLKInQriCxOV4ARR1ZdM

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7581561605:AAGI-5iG4DeXqVhNDvhaICvGbOejumUD6AE/sendMessage?chat_id=5434550993

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 6 IoCs

pid	Process
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.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 3 IoCs

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

flow	ioc
16	reallyfreegeoip.org
17	reallyfreegeoip.org
14	checkip.dyndns.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\equity.Mag	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2016	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
2016	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.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	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2016	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 2016	2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe	30
PID 2252 wrote to memory of 2016	2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe	30
PID 2252 wrote to memory of 2016	2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe	30
PID 2252 wrote to memory of 2016	2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe	30
PID 2252 wrote to memory of 2016	2252	dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe	30

C:\Users\Admin\AppData\Local\Temp\dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
"C:\Users\Admin\AppData\Local\Temp\dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\Temp\dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe
  "C:\Users\Admin\AppData\Local\Temp\dfb9d2234149f933add8bb7682094fa32430f41f34061b077776cecaa0a7ce16.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2016

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\secondo\ruddys\Misapply\Postgeminum\birgita.txt

Filesize
4KB

MD5
2e7baf4f3c9f5830af25c66ecbe1dac4

SHA1
275ee3d8faeef514ec71605788561bae14f3a48a

SHA256
37346b6387f7d33a9eab62407f94cd716081eb80d7443db91b788479e6fcaf4c

SHA512
a7900cc0e56998f9cd30b24584c15a8a533139cb01d16bf2046c1b1bf5ffbd67216aac69a83d1968206a99185f692bf21429622cbf53a9abbbf528ff21f7cb45

Download Submit
\Users\Admin\AppData\Local\Temp\nst4EEC.tmp\LangDLL.dll

Filesize
5KB

MD5
f1e9eed02db3a822a7ddef0c724e5f1f

SHA1
65864992f5b6c79c5efbefb5b1354648a8a86709

SHA256
6dff504c6759c418c6635c9b25b8c91d0d9ef7787a3a93610d7670bb563c09df

SHA512
c22b64fff76b25cf53231b8636f07b361d95791c4646787ce7beac27ad6a0de88337dcceb25b5196f97c452dda72e2614647f51a8a18cb4d5228a82ed2e0780c

Download Submit
\Users\Admin\AppData\Local\Temp\nst4EEC.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/2016-50-0x00000000014F0000-0x000000000498C000-memory.dmp

Filesize
52.6MB

Download
memory/2016-51-0x0000000076FC0000-0x0000000077169000-memory.dmp

Filesize
1.7MB

Download
memory/2016-70-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2016-74-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2016-75-0x00000000014F0000-0x000000000498C000-memory.dmp

Filesize
52.6MB

Download
memory/2016-76-0x0000000000480000-0x00000000004C8000-memory.dmp

Filesize
288KB

Download
memory/2252-48-0x0000000076FC1000-0x00000000770C2000-memory.dmp

Filesize
1.0MB

Download
memory/2252-49-0x0000000076FC0000-0x0000000077169000-memory.dmp

Filesize
1.7MB

Download

Analysis

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