Analysis
- max time kernel
151s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
14/12/2022, 12:38
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-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 234KB
- Sample221214-pt2k7saa42
- SHA256 f5aa229dd50bcfafa825b8fedac5cf14dfc3b8e4c6a4946735300954f86ded5a
- MD5 7c03bafca5f6e42affa5eac78c833b3d
- SHA1 29409437236e6f5088afe6b53a64f573f9eb894f
- SHA512 7a5b5580e2f25ff42dea48f032accc3c38220fee99d9486346583e40435c2ae083a2da03623f619b7263216e09a0bb6164f37c68860085d2f34ee2f88f8bbc6f
- SSDEEP 3072:vbBDia/CSnRL/bROpB9z5p8/UigrvRNwLOwDRKYIsZlsp0vT6py:vbEa/CGLlOpw/UjrpnrN0b6o
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/1380-134-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/5048-136-0x00000000001F0000-0x00000000001F9000-memory.dmp family_smokeloader behavioral2/memory/1380-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1380-138-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1908-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1908-146-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4932 twjbjwf 1908 twjbjwf - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5048 set thread context of 1380 5048 file.exe 81 PID 4932 set thread context of 1908 4932 twjbjwf 90 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI twjbjwf Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI twjbjwf Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI twjbjwf Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1380 file.exe 1380 file.exe 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found 3060 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3060 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1380 file.exe 1908 twjbjwf - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3060 Process not Found Token: SeCreatePagefilePrivilege 3060 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 5048 wrote to memory of 1380 5048 file.exe 81 PID 5048 wrote to memory of 1380 5048 file.exe 81 PID 5048 wrote to memory of 1380 5048 file.exe 81 PID 5048 wrote to memory of 1380 5048 file.exe 81 PID 5048 wrote to memory of 1380 5048 file.exe 81 PID 5048 wrote to memory of 1380 5048 file.exe 81 PID 4932 wrote to memory of 1908 4932 twjbjwf 90 PID 4932 wrote to memory of 1908 4932 twjbjwf 90 PID 4932 wrote to memory of 1908 4932 twjbjwf 90 PID 4932 wrote to memory of 1908 4932 twjbjwf 90 PID 4932 wrote to memory of 1908 4932 twjbjwf 90 PID 4932 wrote to memory of 1908 4932 twjbjwf 90
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:5048 -
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:1380
-
-
C:\Users\Admin\AppData\Roaming\twjbjwfC:\Users\Admin\AppData\Roaming\twjbjwf1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4932 -
C:\Users\Admin\AppData\Roaming\twjbjwfC:\Users\Admin\AppData\Roaming\twjbjwf2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1908
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\twjbjwf
- Size 234KB
- SHA256 f5aa229dd50bcfafa825b8fedac5cf14dfc3b8e4c6a4946735300954f86ded5a
- MD5 7c03bafca5f6e42affa5eac78c833b3d
- SHA1 29409437236e6f5088afe6b53a64f573f9eb894f
- SHA512 7a5b5580e2f25ff42dea48f032accc3c38220fee99d9486346583e40435c2ae083a2da03623f619b7263216e09a0bb6164f37c68860085d2f34ee2f88f8bbc6f
- SSDEEP 3072:vbBDia/CSnRL/bROpB9z5p8/UigrvRNwLOwDRKYIsZlsp0vT6py:vbEa/CGLlOpw/UjrpnrN0b6o
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\twjbjwf
- Size 234KB
- SHA256 f5aa229dd50bcfafa825b8fedac5cf14dfc3b8e4c6a4946735300954f86ded5a
- MD5 7c03bafca5f6e42affa5eac78c833b3d
- SHA1 29409437236e6f5088afe6b53a64f573f9eb894f
- SHA512 7a5b5580e2f25ff42dea48f032accc3c38220fee99d9486346583e40435c2ae083a2da03623f619b7263216e09a0bb6164f37c68860085d2f34ee2f88f8bbc6f
- SSDEEP 3072:vbBDia/CSnRL/bROpB9z5p8/UigrvRNwLOwDRKYIsZlsp0vT6py:vbEa/CGLlOpw/UjrpnrN0b6o
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\twjbjwf
- Size 234KB
- SHA256 f5aa229dd50bcfafa825b8fedac5cf14dfc3b8e4c6a4946735300954f86ded5a
- MD5 7c03bafca5f6e42affa5eac78c833b3d
- SHA1 29409437236e6f5088afe6b53a64f573f9eb894f
- SHA512 7a5b5580e2f25ff42dea48f032accc3c38220fee99d9486346583e40435c2ae083a2da03623f619b7263216e09a0bb6164f37c68860085d2f34ee2f88f8bbc6f
- SSDEEP 3072:vbBDia/CSnRL/bROpB9z5p8/UigrvRNwLOwDRKYIsZlsp0vT6py:vbEa/CGLlOpw/UjrpnrN0b6o
- MD5 SHA1 SHA512 SSDEEP