bitrat | b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf | Triage

Analysis

max time kernel
154s
max time network
151s
platform
windows7_x64
resource
win7-en-20211208
submitted
21-01-2022 23:18

Sharing

Report Analysis Logs

General

Target

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
Size

2.2MB
MD5

38d8d257e09a25020288b83ab37af7f7
SHA1

a9b65b4d52b68aa8422eff17f7b258eec3852e99
SHA256

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf
SHA512

9afa74e14f4773e2f09e7077bec4ca57569f8c51e6e1a255a589e8e39188e0c7167a7d1133ac179c2379a57e9e03de4c2bb0520bbffc0b3e4226af5c75f61024

Score

10^/10

bitrat persistence trojan upx

Malware Config

Extracted

Family

bitrat

Version

1.35

C2

publiquilla.linkpc.net:9091

Attributes

communication_password
bfdba24ee3d61f0260c4dc1034c3ee43
install_dir
System32dll
install_file
System32077273dll.exe
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 5 IoCs

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

Processes:

resource	yara_rule
behavioral1/memory/1528-61-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/1528-62-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/1528-63-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/1528-64-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/1528-66-0x0000000000400000-0x00000000007E4000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32077273dll = "C:\\Users\\Admin\\AppData\\Local\\System32dll\\System32077273dll.exe"	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

pid	process
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	pid	process	target process
PID 800 set thread context of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious behavior: RenamesItself 8 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

pid	process
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	pid	process
Token: SeDebugPrivilege	1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
Token: SeShutdownPrivilege	1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

pid	process
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
1528	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	pid	process	target process
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 800 wrote to memory of 1528	800	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

C:\Users\Admin\AppData\Local\Temp\b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
"C:\Users\Admin\AppData\Local\Temp\b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:800

C:\Users\Admin\AppData\Local\Temp\b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
"C:\Users\Admin\AppData\Local\Temp\b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe"
2⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1528

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Privilege Escalation

Defense Evasion

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/800-54-0x0000000000FA0000-0x00000000011E4000-memory.dmp

Filesize
2.3MB

Download
memory/800-55-0x0000000075F21000-0x0000000075F23000-memory.dmp

Filesize
8KB

Download
memory/800-56-0x0000000000410000-0x000000000041A000-memory.dmp

Filesize
40KB

Download
memory/800-57-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/800-58-0x0000000005870000-0x0000000005A72000-memory.dmp

Filesize
2.0MB

Download
memory/800-59-0x0000000008E20000-0x0000000008FD8000-memory.dmp

Filesize
1.7MB

Download
memory/1528-60-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1528-61-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1528-62-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1528-63-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1528-64-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1528-66-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/1528-67-0x0000000000401000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download