bitrat | bdcf3c8b8f3f71c76e5a192bd9dbce2061379edb57eba0d41fdc69f9172a9d6b

General

Target

putty.exe
Size

157KB
MD5

fb9a5aa7537e9a41eaaa1b5714330895
SHA1

4ebf8ece21579fadd34288adf5a2b2140fd3ee8f
SHA256

bdcf3c8b8f3f71c76e5a192bd9dbce2061379edb57eba0d41fdc69f9172a9d6b
SHA512

2e8afe44d91d2f8de6da8220a34d9e1bbfe2a1fbd9b0ebbd04bc03f43dc1b133edff74bad9e5adcbe26bc7343505e9f39fd6555ede54409a66e7561fbf596da0
SSDEEP

3072:WTTtS/P8TSeZNgDTakOihnjbiTRjEXQAuis1Jy///f/MD:EtTBZAjOGGRviec3fE

Score

10^/10

bitrat persistence trojan

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

pradeepprabhu705.hopto.org:312

Attributes

communication_password
827ccb0eea8a706c4c34a16891f84e7b
tor_process
tor

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\putty = "\"C:\\Users\\Admin\\AppData\\Roaming\\putty.exe\""	putty.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2020	putty.exe
2020	putty.exe
2020	putty.exe
2020	putty.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 820 set thread context of 2020	820	putty.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
268	powershell.exe
820	putty.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	820	putty.exe
Token: SeDebugPrivilege	268	powershell.exe
Token: SeDebugPrivilege	2020	putty.exe
Token: SeShutdownPrivilege	2020	putty.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2020	putty.exe
2020	putty.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 268	820	putty.exe	27
PID 820 wrote to memory of 268	820	putty.exe	27
PID 820 wrote to memory of 268	820	putty.exe	27
PID 820 wrote to memory of 268	820	putty.exe	27
PID 820 wrote to memory of 1636	820	putty.exe	29
PID 820 wrote to memory of 1636	820	putty.exe	29
PID 820 wrote to memory of 1636	820	putty.exe	29
PID 820 wrote to memory of 1636	820	putty.exe	29
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30
PID 820 wrote to memory of 2020	820	putty.exe	30

C:\Users\Admin\AppData\Local\Temp\putty.exe
"C:\Users\Admin\AppData\Local\Temp\putty.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:820
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMQAyADAA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:268
- C:\Users\Admin\AppData\Local\Temp\putty.exe
  C:\Users\Admin\AppData\Local\Temp\putty.exe purecrypter.exe
  2⤵
  PID:1636
- C:\Users\Admin\AppData\Local\Temp\putty.exe
  C:\Users\Admin\AppData\Local\Temp\putty.exe purecrypter.exe
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2020

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/268-62-0x0000000002620000-0x0000000002660000-memory.dmp

Filesize
256KB

Download
memory/268-63-0x0000000002620000-0x0000000002660000-memory.dmp

Filesize
256KB

Download
memory/268-64-0x0000000002620000-0x0000000002660000-memory.dmp

Filesize
256KB

Download
memory/268-65-0x0000000002620000-0x0000000002660000-memory.dmp

Filesize
256KB

Download
memory/268-66-0x0000000002620000-0x0000000002660000-memory.dmp

Filesize
256KB

Download
memory/820-54-0x0000000000200000-0x000000000022C000-memory.dmp

Filesize
176KB

Download
memory/820-55-0x0000000004D90000-0x0000000004DD0000-memory.dmp

Filesize
256KB

Download
memory/820-56-0x000000000F6C0000-0x000000000F972000-memory.dmp

Filesize
2.7MB

Download
memory/820-57-0x00000000090D0000-0x00000000092A2000-memory.dmp

Filesize
1.8MB

Download
memory/820-58-0x0000000000490000-0x0000000000522000-memory.dmp

Filesize
584KB

Download
memory/820-59-0x0000000004D90000-0x0000000004DD0000-memory.dmp

Filesize
256KB

Download
memory/2020-70-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-77-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-71-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-73-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-72-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-74-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-75-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-69-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2020-79-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-80-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-83-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-84-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-82-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-86-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/2020-87-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download

Analysis

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