Analysis
- max time kernel
151s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
22/01/2023, 14:58
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 195KB
- Sample230122-sb6c8aab5s
- SHA256 c8ecbd53f00218c14ea066848502f5828f7f77cde4fcee3b66e9c72088ab1ca8
- MD5 0fdcad66f1f5b11696c1c7a45a718d1b
- SHA1 0f5fb4d515777205e17272c7429ce9d991bda886
- SHA512 1a457c714bb0e829fbc7352e966b77d4ad7eb06a2726162f9837ffe25c3e672aa7691a5a1fe7014beccd73dbbb031e3f20cdf7ad61d7be917938939380d85ad5
- SSDEEP 3072:sBN0X6u+8uOH9LbA/Np5heCOMtZTtLxVBZDTSeCmT7wLRO:kiZdLbINdeCOMtZTtLXD+ex7w
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/3440-133-0x0000000002D10000-0x0000000002D19000-memory.dmp family_smokeloader behavioral2/memory/4872-135-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4872-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4872-138-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2044-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2044-146-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 1004 bivvjca 2044 bivvjca - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3440 set thread context of 4872 3440 file.exe 79 PID 1004 set thread context of 2044 1004 bivvjca 88 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bivvjca Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bivvjca Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI bivvjca - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4872 file.exe 4872 file.exe 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found 2644 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2644 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4872 file.exe 2044 bivvjca - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2644 Process not Found Token: SeCreatePagefilePrivilege 2644 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3440 wrote to memory of 4872 3440 file.exe 79 PID 3440 wrote to memory of 4872 3440 file.exe 79 PID 3440 wrote to memory of 4872 3440 file.exe 79 PID 3440 wrote to memory of 4872 3440 file.exe 79 PID 3440 wrote to memory of 4872 3440 file.exe 79 PID 3440 wrote to memory of 4872 3440 file.exe 79 PID 1004 wrote to memory of 2044 1004 bivvjca 88 PID 1004 wrote to memory of 2044 1004 bivvjca 88 PID 1004 wrote to memory of 2044 1004 bivvjca 88 PID 1004 wrote to memory of 2044 1004 bivvjca 88 PID 1004 wrote to memory of 2044 1004 bivvjca 88 PID 1004 wrote to memory of 2044 1004 bivvjca 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3440 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4872
-
-
C:\Users\Admin\AppData\Roaming\bivvjcaC:\Users\Admin\AppData\Roaming\bivvjca1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1004 -
C:\Users\Admin\AppData\Roaming\bivvjcaC:\Users\Admin\AppData\Roaming\bivvjca2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2044
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\bivvjca
- Size 195KB
- SHA256 c8ecbd53f00218c14ea066848502f5828f7f77cde4fcee3b66e9c72088ab1ca8
- MD5 0fdcad66f1f5b11696c1c7a45a718d1b
- SHA1 0f5fb4d515777205e17272c7429ce9d991bda886
- SHA512 1a457c714bb0e829fbc7352e966b77d4ad7eb06a2726162f9837ffe25c3e672aa7691a5a1fe7014beccd73dbbb031e3f20cdf7ad61d7be917938939380d85ad5
- SSDEEP 3072:sBN0X6u+8uOH9LbA/Np5heCOMtZTtLxVBZDTSeCmT7wLRO:kiZdLbINdeCOMtZTtLXD+ex7w
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bivvjca
- Size 195KB
- SHA256 c8ecbd53f00218c14ea066848502f5828f7f77cde4fcee3b66e9c72088ab1ca8
- MD5 0fdcad66f1f5b11696c1c7a45a718d1b
- SHA1 0f5fb4d515777205e17272c7429ce9d991bda886
- SHA512 1a457c714bb0e829fbc7352e966b77d4ad7eb06a2726162f9837ffe25c3e672aa7691a5a1fe7014beccd73dbbb031e3f20cdf7ad61d7be917938939380d85ad5
- SSDEEP 3072:sBN0X6u+8uOH9LbA/Np5heCOMtZTtLxVBZDTSeCmT7wLRO:kiZdLbINdeCOMtZTtLXD+ex7w
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\bivvjca
- Size 195KB
- SHA256 c8ecbd53f00218c14ea066848502f5828f7f77cde4fcee3b66e9c72088ab1ca8
- MD5 0fdcad66f1f5b11696c1c7a45a718d1b
- SHA1 0f5fb4d515777205e17272c7429ce9d991bda886
- SHA512 1a457c714bb0e829fbc7352e966b77d4ad7eb06a2726162f9837ffe25c3e672aa7691a5a1fe7014beccd73dbbb031e3f20cdf7ad61d7be917938939380d85ad5
- SSDEEP 3072:sBN0X6u+8uOH9LbA/Np5heCOMtZTtLxVBZDTSeCmT7wLRO:kiZdLbINdeCOMtZTtLXD+ex7w
- MD5 SHA1 SHA512 SSDEEP