bitrat | b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf | Triage

Analysis

max time kernel
158s
max time network
164s
platform
windows10_x64
resource
win10-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 3 IoCs

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

Processes:

resource	yara_rule
behavioral2/memory/2256-125-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/2256-126-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral2/memory/2256-127-0x0000000000400000-0x00000000007E4000-memory.dmp	upx

Adds Run key to start application 2 TTPs 3 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32077273dll = "C:\\Users\\Admin\\AppData\\Local\\System32dll\\System32077273dll.exe"	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32077273dll = "C:\\Users\\Admin\\AppData\\Local\\System32dll\\System32077273dll.exe輀"	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32077273dll = "C:\\Users\\Admin\\AppData\\Local\\System32dll\\System32077273dll.exe鼀"	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

pid	process
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	pid	process	target process
PID 2648 set thread context of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious behavior: RenamesItself 7 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

pid	process
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description pid process

Token: SeShutdownPrivilege 2256 b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

pid	process
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
2256	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe

description	pid	process	target process
PID 2648 wrote to memory of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 2648 wrote to memory of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 2648 wrote to memory of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 2648 wrote to memory of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 2648 wrote to memory of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 2648 wrote to memory of 2256	2648	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe	b21d2e0f13942f6acfceae3c6272513956d2cf400766ecd3cadf241674cd6fbf.exe
PID 2648 wrote to memory of 2256	2648	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:2648

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:2256

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/2256-125-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/2256-127-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/2256-126-0x0000000000400000-0x00000000007E4000-memory.dmp

Filesize
3.9MB

Download
memory/2648-121-0x00000000053A0000-0x00000000053F6000-memory.dmp

Filesize
344KB

Download
memory/2648-119-0x0000000005160000-0x000000000565E000-memory.dmp

Filesize
5.0MB

Download
memory/2648-120-0x0000000005030000-0x000000000503A000-memory.dmp

Filesize
40KB

Download
memory/2648-115-0x00000000005E0000-0x0000000000824000-memory.dmp

Filesize
2.3MB

Download
memory/2648-122-0x0000000005070000-0x000000000507A000-memory.dmp

Filesize
40KB

Download
memory/2648-123-0x0000000006270000-0x0000000006472000-memory.dmp

Filesize
2.0MB

Download
memory/2648-124-0x0000000009860000-0x0000000009A18000-memory.dmp

Filesize
1.7MB

Download
memory/2648-118-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download
memory/2648-117-0x0000000005660000-0x0000000005B5E000-memory.dmp

Filesize
5.0MB

Download
memory/2648-116-0x00000000050C0000-0x000000000515C000-memory.dmp

Filesize
624KB

Download