guloader | 5c9a76daffc581161cc5f758b1d88656fef15264bebe2839841e669007bfc12e

General

Target

Tilintetgrelsen.exe
Size

1.1MB
MD5

16c46225160a17b848d85ff6d7c3d97a
SHA1

9dc430053ce9fef9d8aad28bb09e8e79d46b4c2c
SHA256

b6da93489b265943cd505e8908005bf8e9eab517b8f6a34b69f48abd017ebc9e
SHA512

e8665a6b1e73a83ec35dc701507fd2b31efc266021d025f59d0f9c5ec96f9dec76cc1e2e12f78d2316a476fb6d7ad6e26c993bcbdd3c32882f92e66c7cd58dd6
SSDEEP

24576:yV8oc/4DiOZ3gZ2wbfqiPACOedfHYNXNHA6b:yV8MuOZuj/ACOdHAM

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7745751910:AAGY46QDCTWO_Pw9iDqZhkNij-i4uwbMgzE/sendMessage?chat_id=7695061973

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
60	928	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
452	Tilintetgrelsen.exe
452	Tilintetgrelsen.exe

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

Web Service

T1102

flow	ioc
21	drive.google.com
22	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
40	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4244	Tilintetgrelsen.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
452	Tilintetgrelsen.exe
4244	Tilintetgrelsen.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Peppercorns241\septobasidium.ini	Tilintetgrelsen.exe

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
2076	4244	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 3 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	Tilintetgrelsen.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Tilintetgrelsen.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4172	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4244	Tilintetgrelsen.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
452	Tilintetgrelsen.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4244	Tilintetgrelsen.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 4244	452	Tilintetgrelsen.exe	89
PID 452 wrote to memory of 4244	452	Tilintetgrelsen.exe	89
PID 452 wrote to memory of 4244	452	Tilintetgrelsen.exe	89
PID 452 wrote to memory of 4244	452	Tilintetgrelsen.exe	89

C:\Users\Admin\AppData\Local\Temp\Tilintetgrelsen.exe
"C:\Users\Admin\AppData\Local\Temp\Tilintetgrelsen.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:452
- C:\Users\Admin\AppData\Local\Temp\Tilintetgrelsen.exe
  "C:\Users\Admin\AppData\Local\Temp\Tilintetgrelsen.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4244
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4244 -s 2288
    3⤵
    - Program crash
    PID:2076

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI2IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4NjAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODIxNjMwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTk2MDI3Mjk2Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4244 -ip 4244
1⤵
PID:4868

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

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\nsv9442.tmp\System.dll

Filesize
11KB

MD5
34442e1e0c2870341df55e1b7b3cccdc

SHA1
99b2fa21aead4b6ccd8ff2f6d3d3453a51d9c70c

SHA256
269d232712c86983336badb40b9e55e80052d8389ed095ebf9214964d43b6bb1

SHA512
4a8c57fb12997438b488b862f3fc9dc0f236e07bb47b2bce6053dcb03ac7ad171842f02ac749f02dda4719c681d186330524cd2953d33cb50854844e74b33d51

Download Submit
memory/452-20-0x00000000779A1000-0x0000000077AC1000-memory.dmp

Filesize
1.1MB

Download
memory/452-21-0x00000000779A1000-0x0000000077AC1000-memory.dmp

Filesize
1.1MB

Download
memory/452-22-0x0000000074534000-0x0000000074535000-memory.dmp

Filesize
4KB

Download
memory/4244-23-0x00000000016F0000-0x00000000065E6000-memory.dmp

Filesize
79.0MB

Download
memory/4244-24-0x0000000077A28000-0x0000000077A29000-memory.dmp

Filesize
4KB

Download
memory/4244-25-0x0000000077A45000-0x0000000077A46000-memory.dmp

Filesize
4KB

Download
memory/4244-26-0x0000000000490000-0x00000000016E4000-memory.dmp

Filesize
18.3MB

Download
memory/4244-38-0x00000000779A1000-0x0000000077AC1000-memory.dmp

Filesize
1.1MB

Download
memory/4244-43-0x0000000000490000-0x00000000016E4000-memory.dmp

Filesize
18.3MB

Download
memory/4244-44-0x00000000016F0000-0x00000000065E6000-memory.dmp

Filesize
79.0MB

Download
memory/4244-45-0x0000000000490000-0x00000000004DA000-memory.dmp

Filesize
296KB

Download
memory/4244-46-0x0000000039520000-0x0000000039AC4000-memory.dmp

Filesize
5.6MB

Download
memory/4244-47-0x0000000037020000-0x00000000370BC000-memory.dmp

Filesize
624KB

Download

Analysis

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