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 collection discovery downloader keylogger spyware 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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
30	4772	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
4088	Justificante transferencia bancaria 097185445.exe
4088	Justificante transferencia bancaria 097185445.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Justificante transferencia bancaria 097185445.exe
Key opened	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Justificante transferencia bancaria 097185445.exe
Key opened	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Justificante transferencia bancaria 097185445.exe

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

Web Service

T1102

flow	ioc
43	drive.google.com
44	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
56	checkip.dyndns.org
58	reallyfreegeoip.org
59	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4844	Justificante transferencia bancaria 097185445.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4088	Justificante transferencia bancaria 097185445.exe
4844	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

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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 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	Justificante transferencia bancaria 097185445.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Justificante transferencia bancaria 097185445.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 2 IoCs

pid	Process
4844	Justificante transferencia bancaria 097185445.exe
4844	Justificante transferencia bancaria 097185445.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4088	Justificante transferencia bancaria 097185445.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4844	Justificante transferencia bancaria 097185445.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 4844	4088	Justificante transferencia bancaria 097185445.exe	101
PID 4088 wrote to memory of 4844	4088	Justificante transferencia bancaria 097185445.exe	101
PID 4088 wrote to memory of 4844	4088	Justificante transferencia bancaria 097185445.exe	101
PID 4088 wrote to memory of 4844	4088	Justificante transferencia bancaria 097185445.exe	101

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Justificante transferencia bancaria 097185445.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1318997816-2171176372-1451785247-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Justificante transferencia bancaria 097185445.exe

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:4088
- C:\Users\Admin\AppData\Local\Temp\Justificante transferencia bancaria 097185445.exe
  "C:\Users\Admin\AppData\Local\Temp\Justificante transferencia bancaria 097185445.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4844

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7Qjk3ODNDNUQtQjJEOC00NzgyLTkyNzYtN0VBMkY4NUFFMkIzfSIgdXNlcmlkPSJ7MjcwOEI0QUYtREU4Mi00MkNGLUI1NzctMTFEOEIzNzZFQzZGfSIgaW5zdGFsbHNvdXJjZT0ibGltaXRlZCIgcmVxdWVzdGlkPSJ7NkE1MEI2NzktMzg2Qy00QzlBLTkzQzItODg4MzYyMjczMTdBfSIgZGVkdXA9ImNyIiBkb21haW5qb2luZWQ9IjAiPjxodyBsb2dpY2FsX2NwdXM9IjIiIHBoeXNtZW1vcnk9IjQiIGRpc2tfdHlwZT0iMiIgc3NlPSIxIiBzc2UyPSIxIiBzc2UzPSIxIiBzc3NlMz0iMSIgc3NlNDE9IjEiIHNzZTQyPSIxIiBhdng9IjEiLz48b3MgcGxhdGZvcm09IndpbiIgdmVyc2lvbj0iMTAuMC4xOTA0MS4xMjg4IiBzcD0iIiBhcmNoPSJ4NjQiIHByb2R1Y3RfdHlwZT0iNDgiIGlzX3dpcD0iMCIgaXNfaW5fbG9ja2Rvd25fbW9kZT0iMCIvPjxvZW0gcHJvZHVjdF9tYW51ZmFjdHVyZXI9IiIgcHJvZHVjdF9uYW1lPSIiLz48ZXhwIGV0YWc9IiZxdW90O0UreGJBejZZNnNVMTI4OWJTNnFsNFZSTGJramZCVUdUTUpzanJIcjQ0aUk9JnF1b3Q7Ii8-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0NzkzMDA2MTY0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Browser Information Discovery

1

T1217

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

Data from Local System

Email Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsb9636.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
C:\Users\Public\Pictures\fedtlderstvles.lnk

Filesize
932B

MD5
185f7216e80bed4f40868e0193031342

SHA1
811f38c937f0485ee71908460efab0e0d3f04d69

SHA256
a4056906cd613900d78b53778e8f6369aada9cabfb34ccc2a1c8150d75d1196e

SHA512
72e5dd2728958906244f212df85572a2bf115e15c3c7cdb5bc6e3698d92525b3bb16e39a8048a57b8f70f7a53e33d59f9db7454cc6b37d95537f53addd48e3be

Download Submit
memory/4088-310-0x0000000077B81000-0x0000000077CA1000-memory.dmp

Filesize
1.1MB

Download
memory/4088-312-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/4088-311-0x0000000077B81000-0x0000000077CA1000-memory.dmp

Filesize
1.1MB

Download
memory/4844-329-0x0000000077B81000-0x0000000077CA1000-memory.dmp

Filesize
1.1MB

Download
memory/4844-332-0x0000000039DD0000-0x000000003A374000-memory.dmp

Filesize
5.6MB

Download
memory/4844-315-0x0000000077C25000-0x0000000077C26000-memory.dmp

Filesize
4KB

Download
memory/4844-313-0x00000000016C0000-0x00000000070B7000-memory.dmp

Filesize
90.0MB

Download
memory/4844-328-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/4844-330-0x00000000016C0000-0x00000000070B7000-memory.dmp

Filesize
90.0MB

Download
memory/4844-331-0x0000000000460000-0x00000000004A8000-memory.dmp

Filesize
288KB

Download
memory/4844-314-0x0000000077C08000-0x0000000077C09000-memory.dmp

Filesize
4KB

Download
memory/4844-333-0x0000000039D20000-0x0000000039DBC000-memory.dmp

Filesize
624KB

Download
memory/4844-335-0x000000003A8D0000-0x000000003AA92000-memory.dmp

Filesize
1.8MB

Download
memory/4844-336-0x000000003AAA0000-0x000000003AAF0000-memory.dmp

Filesize
320KB

Download
memory/4844-337-0x000000003AB60000-0x000000003B08C000-memory.dmp

Filesize
5.2MB

Download
memory/4844-341-0x0000000037700000-0x0000000037792000-memory.dmp

Filesize
584KB

Download
memory/4844-342-0x00000000377C0000-0x00000000377CA000-memory.dmp

Filesize
40KB

Download

Analysis

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