guloader | 8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21

General

Target

8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
Size

756KB
MD5

36778a82c524fca3b6946eea12169d90
SHA1

4001562de8499dc93076a19ba844395e6a5abc10
SHA256

8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21
SHA512

3fc0111a976324bcc489dc2424e3541609e257643f7cc2c3a1f6e90e80ea6eda19a0630f79946c1de5a86946104183eb0a873ec0365cd5abf5aea1c1b751e8f8
SSDEEP

12288:NF921bthmFx2M9Fy38SeD83S1CvnWXAFxnE8UML789zUO9vVOI0emBmz:xShEx3G3lRsCfWYxnlGUOdb0emBmz

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

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
1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.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 3 IoCs

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

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

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1656	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
1656	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\bedvelsens\Reaccelerates.ske	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
File opened for modification	C:\Program Files (x86)\Common Files\rhesusbarnet\teenfully.bra	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
File opened for modification	C:\Program Files (x86)\Common Files\infarkt.pla	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
File opened for modification	C:\Program Files (x86)\Unelaborated.non	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\rothesay\Fallenternes.con	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.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	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1656	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1656	1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe	31
PID 1704 wrote to memory of 1656	1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe	31
PID 1704 wrote to memory of 1656	1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe	31
PID 1704 wrote to memory of 1656	1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe	31
PID 1704 wrote to memory of 1656	1704	8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe	31

C:\Users\Admin\AppData\Local\Temp\8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
"C:\Users\Admin\AppData\Local\Temp\8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe
  "C:\Users\Admin\AppData\Local\Temp\8a7fdce71df474378c98736c8f93bacb45ab6034bd71316b5eeb40c692d3ee21.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1656

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\Public\Pictures\fedtlderstvles.lnk

Filesize
890B

MD5
6fb78192b6a2dfa67584ed75d9520842

SHA1
10e092b99a0917994fa8c3285fed89c99fee21f6

SHA256
4e3bfa3c87b73ba255901559ebaa9815229f3ff364c94fe17b0e856af8be33b3

SHA512
071c12d4c0036274a7f105543a92d376c13113e7c8360bcffebc72e33da6b369296ab29ed817dd462ff5641b4df9b0464b02254d2365831c158c31fa49f3dba3

Download Submit
\Users\Admin\AppData\Local\Temp\nsdC8BC.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
memory/1656-311-0x00000000014D0000-0x0000000006DD2000-memory.dmp

Filesize
89.0MB

Download
memory/1656-312-0x0000000077020000-0x00000000771C9000-memory.dmp

Filesize
1.7MB

Download
memory/1656-313-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/1656-333-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/1656-335-0x0000000000460000-0x00000000004AA000-memory.dmp

Filesize
296KB

Download
memory/1656-334-0x00000000014D0000-0x0000000006DD2000-memory.dmp

Filesize
89.0MB

Download
memory/1704-310-0x0000000077020000-0x00000000771C9000-memory.dmp

Filesize
1.7MB

Download
memory/1704-309-0x0000000077021000-0x0000000077122000-memory.dmp

Filesize
1.0MB

Download

Analysis

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