guloader | c58e6e08451b38fcd7db6cb04705fec5cc868676debb5ac0e17760e001533437

General

Target

Justificante transferencia bancaria 097185445.exe
Size

737KB
MD5

df8c4ee84f3897880922002188c2ffd8
SHA1

80e151b2aae8383523eabeaafe54dc6b19986eb6
SHA256

c3be34851a80788ae23d5ff8659c36711bbfac902dd745bf0f6e30c240578a86
SHA512

3960d5372e36dd6c6bb72ea79c8ac5f6964da1a2b5119e68efdf9780d84b408ba8283c3908c8f75b89278f466f991ff5b29b941289575e07a341b56b545b8dd0
SSDEEP

12288:yF9S8t23Nm7o/1D220Hy38SeD83S1a37vsQoejUxnE8UML789zUO9vVOI0emBmGu:mS8t3y1DZ3lRsa37kpegxnlGUOdb0emo

Score

10^/10

guloader vipkeylogger discovery downloader keylogger stealer

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot7809339088:AAEUtMa_u0dd_zBfAWh2Ah2az4h6hNs_Wg0/sendMessage?chat_id=7618581100

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
2804	Justificante transferencia bancaria 097185445.exe
2804	Justificante transferencia bancaria 097185445.exe

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

Web Service

T1102

flow	ioc
3	drive.google.com
6	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
15	checkip.dyndns.org
17	reallyfreegeoip.org
18	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1740	Justificante transferencia bancaria 097185445.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2804	Justificante transferencia bancaria 097185445.exe
1740	Justificante transferencia bancaria 097185445.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	Justificante transferencia bancaria 097185445.exe
File opened for modification	C:\Program Files (x86)\Common Files\rhesusbarnet\teenfully.bra	Justificante transferencia bancaria 097185445.exe
File opened for modification	C:\Program Files (x86)\Common Files\infarkt.pla	Justificante transferencia bancaria 097185445.exe
File opened for modification	C:\Program Files (x86)\Unelaborated.non	Justificante transferencia bancaria 097185445.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\rothesay\Fallenternes.con	Justificante transferencia bancaria 097185445.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	Justificante transferencia bancaria 097185445.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Justificante transferencia bancaria 097185445.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1740	Justificante transferencia bancaria 097185445.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2804	Justificante transferencia bancaria 097185445.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1740	Justificante transferencia bancaria 097185445.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 1740	2804	Justificante transferencia bancaria 097185445.exe	31
PID 2804 wrote to memory of 1740	2804	Justificante transferencia bancaria 097185445.exe	31
PID 2804 wrote to memory of 1740	2804	Justificante transferencia bancaria 097185445.exe	31
PID 2804 wrote to memory of 1740	2804	Justificante transferencia bancaria 097185445.exe	31
PID 2804 wrote to memory of 1740	2804	Justificante transferencia bancaria 097185445.exe	31

C:\Users\Admin\AppData\Local\Temp\Justificante transferencia bancaria 097185445.exe
"C:\Users\Admin\AppData\Local\Temp\Justificante transferencia bancaria 097185445.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:2804
- C:\Users\Admin\AppData\Local\Temp\Justificante transferencia bancaria 097185445.exe
  "C:\Users\Admin\AppData\Local\Temp\Justificante transferencia bancaria 097185445.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1740

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
916B

MD5
13441b8d19c1817f92ec3e6a161de303

SHA1
516a4acd348fbc3bcd3a4966b05ca6bea09d291c

SHA256
dbd74beb102ba2ea8d2109bc5996e6a49ecbf1875e9926d37c06d17cd7b56772

SHA512
d0393507a919eb24ddd9e1e0142b22c438d71826581d70c670b16c835028f9f4538236a526c01ceaa7c9e94e640faf788012229a3eb2db43cd127a4d32e447b9

Download Submit
\Users\Admin\AppData\Local\Temp\nstE966.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
memory/1740-311-0x00000000014D0000-0x0000000006EC7000-memory.dmp

Filesize
90.0MB

Download
memory/1740-312-0x0000000077280000-0x0000000077429000-memory.dmp

Filesize
1.7MB

Download
memory/1740-313-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/1740-337-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/1740-338-0x00000000014D0000-0x0000000006EC7000-memory.dmp

Filesize
90.0MB

Download
memory/1740-339-0x0000000000460000-0x00000000004A8000-memory.dmp

Filesize
288KB

Download
memory/2804-309-0x0000000077281000-0x0000000077382000-memory.dmp

Filesize
1.0MB

Download
memory/2804-310-0x0000000077280000-0x0000000077429000-memory.dmp

Filesize
1.7MB

Download

Analysis

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