guloader | f7962bec2e9ae0913ca8c8b3349a306d5e6f200ec6c1531e35749bb00d1b6a10

General

Target

Vodka.exe
Size

454KB
MD5

6ff1a159ea827fc4cc63417004a81030
SHA1

e6412f570c1c3aa91e8e87a92a8a848547f9b94d
SHA256

f7962bec2e9ae0913ca8c8b3349a306d5e6f200ec6c1531e35749bb00d1b6a10
SHA512

0039a328696c002a533da4f51ece25b61e7bb4256bb2af5dff02fa338f9a18e0a69da5ea3618d2f4c746960aa2df3188a5c0c1b115568e81a1436fc6b85b9116
SSDEEP

12288:eTLpZM7P6UknZxn/7kRizAMzd6V7+aqEsapYNd1:eT7M7P6FZQQRxC7+JEfpWd1

Score

10^/10

guloader remcos remotehost collection discovery downloader rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

212.162.149.195:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-9EP276
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Detected Nirsoft tools 6 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/4844-31-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2776-41-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2776-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1684-30-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4844-34-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1684-47-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4844-31-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4844-34-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1684-30-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1684-47-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Loads dropped DLL 2 IoCs

pid	Process
4548	Vodka.exe
4548	Vodka.exe

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 accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Vodka.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1768	Vodka.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4548	Vodka.exe
1768	Vodka.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4548 set thread context of 1768	4548	Vodka.exe	91
PID 1768 set thread context of 1684	1768	Vodka.exe	99
PID 1768 set thread context of 4844	1768	Vodka.exe	100
PID 1768 set thread context of 2776	1768	Vodka.exe	101

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Forportens179.ini	Vodka.exe
File created	C:\Program Files (x86)\nellike\dermatophagus.lnk	Vodka.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 5 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	Vodka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vodka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vodka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vodka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vodka.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1684	Vodka.exe
1684	Vodka.exe
2776	Vodka.exe
2776	Vodka.exe
1684	Vodka.exe
1684	Vodka.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4548	Vodka.exe
1768	Vodka.exe
1768	Vodka.exe
1768	Vodka.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	Vodka.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1768	Vodka.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 1768	4548	Vodka.exe	91
PID 4548 wrote to memory of 1768	4548	Vodka.exe	91
PID 4548 wrote to memory of 1768	4548	Vodka.exe	91
PID 4548 wrote to memory of 1768	4548	Vodka.exe	91
PID 4548 wrote to memory of 1768	4548	Vodka.exe	91
PID 1768 wrote to memory of 1684	1768	Vodka.exe	99
PID 1768 wrote to memory of 1684	1768	Vodka.exe	99
PID 1768 wrote to memory of 1684	1768	Vodka.exe	99
PID 1768 wrote to memory of 4844	1768	Vodka.exe	100
PID 1768 wrote to memory of 4844	1768	Vodka.exe	100
PID 1768 wrote to memory of 4844	1768	Vodka.exe	100
PID 1768 wrote to memory of 2776	1768	Vodka.exe	101
PID 1768 wrote to memory of 2776	1768	Vodka.exe	101
PID 1768 wrote to memory of 2776	1768	Vodka.exe	101

C:\Users\Admin\AppData\Local\Temp\Vodka.exe
"C:\Users\Admin\AppData\Local\Temp\Vodka.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Users\Admin\AppData\Local\Temp\Vodka.exe
  "C:\Users\Admin\AppData\Local\Temp\Vodka.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1768
- - C:\Users\Admin\AppData\Local\Temp\Vodka.exe
    C:\Users\Admin\AppData\Local\Temp\Vodka.exe /stext "C:\Users\Admin\AppData\Local\Temp\lhzmuizcup"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1684
- - C:\Users\Admin\AppData\Local\Temp\Vodka.exe
    C:\Users\Admin\AppData\Local\Temp\Vodka.exe /stext "C:\Users\Admin\AppData\Local\Temp\wjefvbkdixscej"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4844
- - C:\Users\Admin\AppData\Local\Temp\Vodka.exe
    C:\Users\Admin\AppData\Local\Temp\Vodka.exe /stext "C:\Users\Admin\AppData\Local\Temp\gdjyntuxefkppptwn"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2776

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

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
78ae1dabe7d11f860570250548b20706

SHA1
abe97d8a8bb870f830b75d7dd3dd5c99613a1ed5

SHA256
e131c9b8e893044151ab70ef45aa21d70f7e96cf3e04656f6e2813a119399455

SHA512
f3d65d5e6a65f3344b6b7174405b2403f285d2f9563fa8b67d102a05ec4df4337e827c55a2a6b8a9853f7f658582561e535cbe055db1d8e2ab0685066627779f

Download Submit
C:\Users\Admin\AppData\Local\Temp\lhzmuizcup

Filesize
4KB

MD5
60a0bdc1cf495566ff810105d728af4a

SHA1
243403c535f37a1f3d5f307fc3fb8bdd5cbcf6e6

SHA256
fd12da9f9b031f9fa742fa73bbb2c9265f84f49069b7c503e512427b93bce6d2

SHA512
4445f214dbf5a01d703f22a848b56866f3f37b399de503f99d40448dc86459bf49d1fa487231f23c080a559017d72bcd9f6c13562e1f0bd53c1c9a89e73306a5

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy9CCD.tmp\System.dll

Filesize
12KB

MD5
564bb0373067e1785cba7e4c24aab4bf

SHA1
7c9416a01d821b10b2eef97b80899d24014d6fc1

SHA256
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

SHA512
22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

Download Submit
memory/1684-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1684-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1684-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1684-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1768-53-0x0000000034850000-0x0000000034869000-memory.dmp

Filesize
100KB

Download
memory/1768-19-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-52-0x0000000034850000-0x0000000034869000-memory.dmp

Filesize
100KB

Download
memory/1768-89-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-80-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-77-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-74-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-71-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-24-0x00000000016E0000-0x0000000003851000-memory.dmp

Filesize
33.4MB

Download
memory/1768-56-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-68-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-65-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-23-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-17-0x00000000016E0000-0x0000000003851000-memory.dmp

Filesize
33.4MB

Download
memory/1768-92-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-62-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/1768-49-0x0000000034850000-0x0000000034869000-memory.dmp

Filesize
100KB

Download
memory/1768-59-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/2776-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2776-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2776-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2776-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4548-14-0x0000000077811000-0x0000000077931000-memory.dmp

Filesize
1.1MB

Download
memory/4548-13-0x0000000004220000-0x0000000006391000-memory.dmp

Filesize
33.4MB

Download
memory/4548-15-0x0000000074675000-0x0000000074676000-memory.dmp

Filesize
4KB

Download
memory/4548-16-0x0000000004220000-0x0000000006391000-memory.dmp

Filesize
33.4MB

Download
memory/4844-27-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4844-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4844-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4844-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

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