guloader | 5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44

General

Target

5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe
Size

553KB
MD5

d4c19e96d83bd586016a3be2e3a57f1d
SHA1

bf5d7271766db9b568ac98006c7eda0de40bc2bd
SHA256

5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44
SHA512

03078c41d61c02c1f8f7d34c4b93ac4d534a26c4d3dd28c04102d7f10b2eecea6499b38e0a87db0447314b3ca1f097f02d1c7ebd5d3fa994d9708d86df9f9c62
SSDEEP

12288:32EIMY+ov3ZXExuA5lpKHHtmZxxNQicmd3ZhZF:3w9+U36t5lAnoZxbcmdPZF

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 1 IoCs

pid	Process
1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

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
6	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2720	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe
2720	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1792 set thread context of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.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	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2720	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30
PID 1792 wrote to memory of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30
PID 1792 wrote to memory of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30
PID 1792 wrote to memory of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30
PID 1792 wrote to memory of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30
PID 1792 wrote to memory of 2720	1792	5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe	30

C:\Users\Admin\AppData\Local\Temp\5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe
"C:\Users\Admin\AppData\Local\Temp\5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.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:1792
- C:\Users\Admin\AppData\Local\Temp\5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe
  "C:\Users\Admin\AppData\Local\Temp\5cba2773587387ad35e187bf5135467da368909ae0d4dd1a0f1d80be6338fc44.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720

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

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsd8344.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/1792-9-0x0000000003150000-0x000000000561F000-memory.dmp

Filesize
36.8MB

Download
memory/1792-11-0x00000000771F0000-0x0000000077399000-memory.dmp

Filesize
1.7MB

Download
memory/1792-10-0x00000000771F1000-0x00000000772F2000-memory.dmp

Filesize
1.0MB

Download
memory/1792-12-0x0000000003150000-0x000000000561F000-memory.dmp

Filesize
36.8MB

Download
memory/1792-13-0x0000000003150000-0x000000000561F000-memory.dmp

Filesize
36.8MB

Download
memory/2720-14-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2720-15-0x00000000771F0000-0x0000000077399000-memory.dmp

Filesize
1.7MB

Download
memory/2720-17-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2720-19-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2720-21-0x0000000033E70000-0x0000000033EC0000-memory.dmp

Filesize
320KB

Download
memory/2720-22-0x0000000033F00000-0x0000000033F4E000-memory.dmp

Filesize
312KB

Download
memory/2720-23-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download

Analysis

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