bitrat | 98a0f70e2b7b3f06f163558f02dc1b10cd7a06e289c86e2b5db3abdab72ee5bd

Analysis

max time kernel
150s
max time network
164s
platform
windows10_x64
resource
win10v20210408
submitted
09/09/2021, 07:23

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General

Target
4df10301ad5b9b1f6426a72fa27a8f53.exe
Size 4.0MB
Sample210909-h7wtjsfgb6
SHA256 98a0f70e2b7b3f06f163558f02dc1b10cd7a06e289c86e2b5db3abdab72ee5bd
MD5 4df10301ad5b9b1f6426a72fa27a8f53
SHA1 3c82d5cd70dca17369cda4e10eefe42cd30a1322
SHA512 60f223ad642cb32f69fa1f4c5221e2fbf3e713470865d2c3f65f4f27997e16bc783b1dad3512bffe3623e6c9345bf2f85b302d1a15f7e8d560efc62b070204e2
MD5 SHA1 SHA512

Score

10^/10

bitrat quasar xenarmor qua3 password persistence recovery spyware stealer trojan upx

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

qua3

yz.videomarket.eu:1972

Mutex

QSR_MUTEX_dQvCIzmEBFgxmMuIEE

Attributes

encryption_key
Txsm23EgD4NQfzpXFJzP
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

BitRAT
BitRAT is a remote access tool written in C++ and uses leaked source code from other families.
trojan bitrat

BitRAT Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1536-116-0x0000000000400000-0x00000000007CE000-memory.dmp	family_bitrat
behavioral2/memory/1536-117-0x000000000068A488-mapping.dmp	family_bitrat
behavioral2/memory/1536-118-0x0000000000400000-0x00000000007CE000-memory.dmp	family_bitrat

Quasar Payload 3 IoCs

resource	yara_rule
behavioral2/memory/3880-125-0x00000000004581CE-mapping.dmp	family_quasar
behavioral2/memory/3880-124-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral2/memory/3880-130-0x0000000005450000-0x000000000594E000-memory.dmp	family_quasar

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
XenArmor Suite
XenArmor is as suite of password recovery tools for various application.
recovery password xenarmor

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000100000001ab3f-140.dat	acprotect
behavioral2/files/0x000100000001ab3f-141.dat	acprotect

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1320	dtXw7AcDuY15z179.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2192-135-0x0000000000400000-0x00000000008DC000-memory.dmp	upx
behavioral2/memory/2192-139-0x0000000000400000-0x00000000008DC000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
1052	4df10301ad5b9b1f6426a72fa27a8f53.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	4df10301ad5b9b1f6426a72fa27a8f53.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\erty = "C:\\Users\\Admin\\AppData\\Roaming\\gnmk\\xcvb.exe"	4df10301ad5b9b1f6426a72fa27a8f53.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	dtXw7AcDuY15z179.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\af = "C:\\Users\\Admin\\AppData\\Roaming\\an\\al.exe"	dtXw7AcDuY15z179.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
17	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3128 set thread context of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 1320 set thread context of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1536 set thread context of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 2192 set thread context of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1052	4df10301ad5b9b1f6426a72fa27a8f53.exe
1052	4df10301ad5b9b1f6426a72fa27a8f53.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
Token: SeDebugPrivilege	3880	RegAsm.exe
Token: SeDebugPrivilege	1052	4df10301ad5b9b1f6426a72fa27a8f53.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
3128	4df10301ad5b9b1f6426a72fa27a8f53.exe
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
1536	4df10301ad5b9b1f6426a72fa27a8f53.exe
1320	dtXw7AcDuY15z179.exe
3880	RegAsm.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 3128 wrote to memory of 1536	3128	4df10301ad5b9b1f6426a72fa27a8f53.exe	75
PID 1536 wrote to memory of 1320	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	79
PID 1536 wrote to memory of 1320	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	79
PID 1536 wrote to memory of 1320	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	79
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1320 wrote to memory of 3880	1320	dtXw7AcDuY15z179.exe	81
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 1536 wrote to memory of 2192	1536	4df10301ad5b9b1f6426a72fa27a8f53.exe	83
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84
PID 2192 wrote to memory of 1052	2192	4df10301ad5b9b1f6426a72fa27a8f53.exe	84

C:\Users\Admin\AppData\Local\Temp\4df10301ad5b9b1f6426a72fa27a8f53.exe
"C:\Users\Admin\AppData\Local\Temp\4df10301ad5b9b1f6426a72fa27a8f53.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Users\Admin\AppData\Local\Temp\4df10301ad5b9b1f6426a72fa27a8f53.exe
  "C:\Users\Admin\AppData\Local\Temp\4df10301ad5b9b1f6426a72fa27a8f53.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1536
- - C:\Users\Admin\AppData\Local\Temp\dtXw7AcDuY15z179.exe
    "C:\Users\Admin\AppData\Local\Temp\dtXw7AcDuY15z179.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1320
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3880
- - C:\Users\Admin\AppData\Local\Temp\4df10301ad5b9b1f6426a72fa27a8f53.exe
    -a "C:\Users\Admin\AppData\Local\d670d454\plg\w3wcuIOr.json"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2192
  - - C:\Users\Admin\AppData\Local\Temp\4df10301ad5b9b1f6426a72fa27a8f53.exe
      -a "C:\Users\Admin\AppData\Local\Temp\unk.xml"
      4⤵
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1052

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1052-143-0x0000000000400000-0x00000000006FE000-memory.dmp

Download

memory/1052-137-0x0000000000400000-0x00000000006FE000-memory.dmp

Download

memory/1536-116-0x0000000000400000-0x00000000007CE000-memory.dmp

Download

memory/1536-118-0x0000000000400000-0x00000000007CE000-memory.dmp

Download

memory/2192-139-0x0000000000400000-0x00000000008DC000-memory.dmp

Download

memory/2192-135-0x0000000000400000-0x00000000008DC000-memory.dmp

Download

memory/3880-134-0x0000000006870000-0x0000000006871000-memory.dmp

Download

memory/3880-133-0x0000000006500000-0x0000000006501000-memory.dmp

Download

memory/3880-132-0x0000000005910000-0x0000000005911000-memory.dmp

Download

memory/3880-131-0x0000000005560000-0x0000000005561000-memory.dmp

Download

memory/3880-130-0x0000000005450000-0x000000000594E000-memory.dmp

Download

memory/3880-129-0x0000000005450000-0x0000000005451000-memory.dmp

Download

memory/3880-128-0x0000000005950000-0x0000000005951000-memory.dmp

Download

memory/3880-124-0x0000000000400000-0x000000000045E000-memory.dmp

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