Analysis
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max time kernel
147s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
15/10/2024, 22:29
Static task
static1
Behavioral task
behavioral1
Sample
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
Resource
win10v2004-20241007-en
General
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Target
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
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Size
198KB
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MD5
1669832b36b31493c90462299a15ff87
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SHA1
5ea3ae9fda554d12d8ff14532e25572b31df4ca6
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SHA256
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4
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SHA512
2f7bbf294ee17b0b4903bddf73960a52d48d6035cb930976e6925d1a7e82bf7fb22487ae588e425f19c28038570cb385198bb045abb7578dcba5cfb7f6643b24
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SSDEEP
3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 3040 sbfmgomf.exe -
Executes dropped EXE 2 IoCs
pid Process 3040 sbfmgomf.exe 32 txmfybtau.exe -
Loads dropped DLL 1 IoCs
pid Process 32 txmfybtau.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\uywot\\txmfybtau.exe \"c:\\Program Files\\uywot\\txmfybtau.dll\",Compliance" txmfybtau.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\i: txmfybtau.exe File opened (read-only) \??\o: txmfybtau.exe File opened (read-only) \??\p: txmfybtau.exe File opened (read-only) \??\q: txmfybtau.exe File opened (read-only) \??\u: txmfybtau.exe File opened (read-only) \??\x: txmfybtau.exe File opened (read-only) \??\b: txmfybtau.exe File opened (read-only) \??\e: txmfybtau.exe File opened (read-only) \??\g: txmfybtau.exe File opened (read-only) \??\k: txmfybtau.exe File opened (read-only) \??\l: txmfybtau.exe File opened (read-only) \??\s: txmfybtau.exe File opened (read-only) \??\a: txmfybtau.exe File opened (read-only) \??\m: txmfybtau.exe File opened (read-only) \??\n: txmfybtau.exe File opened (read-only) \??\t: txmfybtau.exe File opened (read-only) \??\v: txmfybtau.exe File opened (read-only) \??\w: txmfybtau.exe File opened (read-only) \??\h: txmfybtau.exe File opened (read-only) \??\j: txmfybtau.exe File opened (read-only) \??\r: txmfybtau.exe File opened (read-only) \??\y: txmfybtau.exe File opened (read-only) \??\z: txmfybtau.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 txmfybtau.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File created \??\c:\Program Files\uywot\txmfybtau.exe sbfmgomf.exe File opened for modification \??\c:\Program Files\uywot\txmfybtau.exe sbfmgomf.exe File opened for modification \??\c:\Program Files\uywot sbfmgomf.exe File created \??\c:\Program Files\uywot\txmfybtau.dll sbfmgomf.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language txmfybtau.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sbfmgomf.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 3704 cmd.exe 1684 PING.EXE -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 txmfybtau.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString txmfybtau.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 1684 PING.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 32 txmfybtau.exe 32 txmfybtau.exe 32 txmfybtau.exe 32 txmfybtau.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 32 txmfybtau.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1528 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 3040 sbfmgomf.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1528 wrote to memory of 3704 1528 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 86 PID 1528 wrote to memory of 3704 1528 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 86 PID 1528 wrote to memory of 3704 1528 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 86 PID 3704 wrote to memory of 1684 3704 cmd.exe 88 PID 3704 wrote to memory of 1684 3704 cmd.exe 88 PID 3704 wrote to memory of 1684 3704 cmd.exe 88 PID 3704 wrote to memory of 3040 3704 cmd.exe 90 PID 3704 wrote to memory of 3040 3704 cmd.exe 90 PID 3704 wrote to memory of 3040 3704 cmd.exe 90 PID 3040 wrote to memory of 32 3040 sbfmgomf.exe 91 PID 3040 wrote to memory of 32 3040 sbfmgomf.exe 91 PID 3040 wrote to memory of 32 3040 sbfmgomf.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1528 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\sbfmgomf.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:3704 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1684
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C:\Users\Admin\AppData\Local\Temp\sbfmgomf.exeC:\Users\Admin\AppData\Local\Temp\\sbfmgomf.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3040 -
\??\c:\Program Files\uywot\txmfybtau.exe"c:\Program Files\uywot\txmfybtau.exe" "c:\Program Files\uywot\txmfybtau.dll",Compliance C:\Users\Admin\AppData\Local\Temp\sbfmgomf.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:32
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
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Downloads
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Filesize
60KB
MD5889b99c52a60dd49227c5e485a016679
SHA18fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA2566cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
SHA51208933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
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Filesize
199KB
MD5553e15818e79eef0553fe04260db0e65
SHA1e8698a4c458e899c7c99badd686bc61997f70fe2
SHA256435a4e6a0020be7b11e246bcffa9ea52b11777b510bf77337e48a5ad28f14e5d
SHA51296938ef1a280f08a606be2ae0b6b87a1c26a88badbb2e5d79acff27af56a19b38ac6ba951a943b31156077f958bcc189bb8691e2b9eb343cfa2b7c44e4d03d9d
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Filesize
141KB
MD5b890bababa5a8daee14700896482ed0d
SHA16f63c1ecda0bc293f26abcc21643f358e72fad3e
SHA256f5c0e1fe268d3f432d6b16e51a8b7c9b6dfdb72648dc62ab63b3ac18959328f9
SHA5126e8afa54e2100c1ba9496860d98033888e999bc8e3c04e53f2fee5f6a463d9f4ab689c7e32ae4fbaa90cb7fd0c931e38937684682ad96ba00794bc90cefa5fec