bitrat | 937a96f78ec1337d5cc83b3813a66993264c0486ece70ca19be2096c831a7c41

General

Target

Bcluw.exe
Size

4.7MB
MD5

a469666f1ab75f375379d5af6a69662f
SHA1

bdf4ff0b2df674761b09d9d951cb20e5426c2bc9
SHA256

937a96f78ec1337d5cc83b3813a66993264c0486ece70ca19be2096c831a7c41
SHA512

7ff53a9f5bcda5cdc30ca813f15f1003805b8ec91ef10df3c25594bafcc9199ca2a7d6bff4051fc3e09af56b343607ab354f0e53a95583d7c9609669648d85ea
SSDEEP

98304:Tmf7mxhO9z9sIlUjeehvHn0CaSbbIl9ZqhiGXzhMXuJOrvhUveJTv:TmuW9PetH0Cd49khiYziX7UvmTv

Score

10^/10

bitrat persistence trojan upx

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

bendicion777.con-ip.com:7777

Attributes

communication_password
202cb962ac59075b964b07152d234b70
tor_process
tor

Signatures

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

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/624-146-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/624-147-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/624-148-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/624-149-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/624-150-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/624-154-0x0000000000400000-0x00000000007E4000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

Bcluw.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation Bcluw.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	Bcluw.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Bcluw.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	Bcluw.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

InstallUtil.exe

pid process

624 InstallUtil.exe
624 InstallUtil.exe
624 InstallUtil.exe
624 InstallUtil.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Bcluw.exe

description pid process target process

PID 3364 set thread context of 624 3364 Bcluw.exe InstallUtil.exe
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 4 IoCs

Processes:

powershell.exeBcluw.exe

pid process

4228 powershell.exe
4228 powershell.exe
3364 Bcluw.exe
3364 Bcluw.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Bcluw.exepowershell.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 3364 Bcluw.exe
Token: SeDebugPrivilege 4228 powershell.exe
Token: SeShutdownPrivilege 624 InstallUtil.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

InstallUtil.exe

pid process

624 InstallUtil.exe
624 InstallUtil.exe

pid	process
624	InstallUtil.exe
624	InstallUtil.exe
624	InstallUtil.exe
624	InstallUtil.exe

description	pid	process	target process
PID 3364 set thread context of 624	3364	Bcluw.exe	InstallUtil.exe

pid	process
4228	powershell.exe
4228	powershell.exe
3364	Bcluw.exe
3364	Bcluw.exe

description	pid	process
Token: SeDebugPrivilege	3364	Bcluw.exe
Token: SeDebugPrivilege	4228	powershell.exe
Token: SeShutdownPrivilege	624	InstallUtil.exe

pid	process
624	InstallUtil.exe
624	InstallUtil.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Bcluw.exe

description	pid	process	target process
PID 3364 wrote to memory of 4228	3364	Bcluw.exe	powershell.exe
PID 3364 wrote to memory of 4228	3364	Bcluw.exe	powershell.exe
PID 3364 wrote to memory of 4228	3364	Bcluw.exe	powershell.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe
PID 3364 wrote to memory of 624	3364	Bcluw.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Bcluw.exe
"C:\Users\Admin\AppData\Local\Temp\Bcluw.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3364

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4228

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/624-156-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-157-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-165-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-164-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-148-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/624-163-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-162-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-149-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/624-161-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-150-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/624-160-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-159-0x0000000074A00000-0x0000000074A39000-memory.dmp

Filesize
228KB

Download
memory/624-158-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-145-0x0000000000000000-mapping.dmp

Download
memory/624-146-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/624-147-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/624-155-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-154-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/624-153-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/624-151-0x0000000074A00000-0x0000000074A39000-memory.dmp

Filesize
228KB

Download
memory/624-152-0x0000000074D80000-0x0000000074DB9000-memory.dmp

Filesize
228KB

Download
memory/3364-135-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/3364-134-0x0000000005140000-0x00000000051D2000-memory.dmp

Filesize
584KB

Download
memory/3364-136-0x0000000007490000-0x00000000074B2000-memory.dmp

Filesize
136KB

Download
memory/3364-132-0x00000000002C0000-0x0000000000770000-memory.dmp

Filesize
4.7MB

Download
memory/3364-133-0x00000000056F0000-0x0000000005C94000-memory.dmp

Filesize
5.6MB

Download
memory/4228-144-0x0000000006C60000-0x0000000006C7A000-memory.dmp

Filesize
104KB

Download
memory/4228-143-0x0000000007DB0000-0x000000000842A000-memory.dmp

Filesize
6.5MB

Download
memory/4228-138-0x00000000051E0000-0x0000000005216000-memory.dmp

Filesize
216KB

Download
memory/4228-140-0x0000000006080000-0x00000000060E6000-memory.dmp

Filesize
408KB

Download
memory/4228-142-0x0000000006760000-0x000000000677E000-memory.dmp

Filesize
120KB

Download
memory/4228-137-0x0000000000000000-mapping.dmp

Download
memory/4228-141-0x00000000060F0000-0x0000000006156000-memory.dmp

Filesize
408KB

Download
memory/4228-139-0x0000000005850000-0x0000000005E78000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads