Analysis
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max time kernel
148s -
max time network
151s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
11-05-2021 11:37
Static task
static1
Behavioral task
behavioral1
Sample
TI.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
TI.exe
Resource
win10v20210410
General
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Target
TI.exe
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Size
392KB
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MD5
aecd8738094fcc9cdf76c8d538deda58
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SHA1
84b0a144d7ff0c069f0e2f651b9e00e51ce9b559
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SHA256
fa8bcb532dc59bca85334cee54152785e4f3ee8d7d9d6ca3680443beeb61ee58
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SHA512
16745c8fee729f4480317b2c058552a20b085bc0934e67be6590cd26e41c479733d8a9442ce0e686b0ef9fa86d79db6bcc1349d274f021240d7dd4a3e08fadac
Malware Config
Extracted
Protocol: smtp- Host:
casids.co.ke - Port:
587 - Username:
webmaster@casids.co.ke - Password:
Eightis88
Signatures
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Executes dropped EXE 3 IoCs
Processes:
sdiagnhost.exesdiagnhost.exesdiagnhost.exepid process 1200 sdiagnhost.exe 1036 sdiagnhost.exe 920 sdiagnhost.exe -
Loads dropped DLL 2 IoCs
Processes:
TI.exepid process 1676 TI.exe 1676 TI.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 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
Processes:
TI.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\Documents\\sdiagnhost.exe" TI.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 16 checkip.dyndns.org -
Suspicious use of SetThreadContext 2 IoCs
Processes:
sdiagnhost.exesdiagnhost.exedescription pid process target process PID 1200 set thread context of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1036 set thread context of 920 1036 sdiagnhost.exe sdiagnhost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 16 IoCs
Processes:
TI.exesdiagnhost.exesdiagnhost.exepid process 1676 TI.exe 1676 TI.exe 1676 TI.exe 1676 TI.exe 1676 TI.exe 1676 TI.exe 1200 sdiagnhost.exe 1200 sdiagnhost.exe 1200 sdiagnhost.exe 1200 sdiagnhost.exe 1200 sdiagnhost.exe 1200 sdiagnhost.exe 920 sdiagnhost.exe 920 sdiagnhost.exe 920 sdiagnhost.exe 920 sdiagnhost.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
TI.exesdiagnhost.exesdiagnhost.exesdiagnhost.exedescription pid process Token: SeDebugPrivilege 1676 TI.exe Token: SeDebugPrivilege 1200 sdiagnhost.exe Token: SeDebugPrivilege 1036 sdiagnhost.exe Token: SeDebugPrivilege 920 sdiagnhost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sdiagnhost.exepid process 920 sdiagnhost.exe -
Suspicious use of WriteProcessMemory 22 IoCs
Processes:
TI.exesdiagnhost.exesdiagnhost.exedescription pid process target process PID 1676 wrote to memory of 1200 1676 TI.exe sdiagnhost.exe PID 1676 wrote to memory of 1200 1676 TI.exe sdiagnhost.exe PID 1676 wrote to memory of 1200 1676 TI.exe sdiagnhost.exe PID 1676 wrote to memory of 1200 1676 TI.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1200 wrote to memory of 1036 1200 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe PID 1036 wrote to memory of 920 1036 sdiagnhost.exe sdiagnhost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\TI.exe"C:\Users\Admin\AppData\Local\Temp\TI.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\sdiagnhost.exe"C:\Users\Admin\Documents\sdiagnhost.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\sdiagnhost.exe"C:\Users\Admin\Documents\sdiagnhost.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\sdiagnhost.exe"C:\Users\Admin\Documents\sdiagnhost.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\Documents\sdiagnhost.exeMD5
cfe5ae9a0f302c45a5cbc5c4e8970808
SHA186844e18e04d5380e90c2dd5c81fc95969205dec
SHA256a132c7601841ee4eb8160f0fd62fe28385cb0dd62bec53cb048669ff00202279
SHA512724d097d6c1dae19dec76d692ed65f542fa67f0646ce0b35c39cf287a7bf4a49acd393bd0180f5ebdc5dbeb12d0deb85557959cc632dc5434690475343972472
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C:\Users\Admin\Documents\sdiagnhost.exeMD5
cfe5ae9a0f302c45a5cbc5c4e8970808
SHA186844e18e04d5380e90c2dd5c81fc95969205dec
SHA256a132c7601841ee4eb8160f0fd62fe28385cb0dd62bec53cb048669ff00202279
SHA512724d097d6c1dae19dec76d692ed65f542fa67f0646ce0b35c39cf287a7bf4a49acd393bd0180f5ebdc5dbeb12d0deb85557959cc632dc5434690475343972472
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C:\Users\Admin\Documents\sdiagnhost.exeMD5
cfe5ae9a0f302c45a5cbc5c4e8970808
SHA186844e18e04d5380e90c2dd5c81fc95969205dec
SHA256a132c7601841ee4eb8160f0fd62fe28385cb0dd62bec53cb048669ff00202279
SHA512724d097d6c1dae19dec76d692ed65f542fa67f0646ce0b35c39cf287a7bf4a49acd393bd0180f5ebdc5dbeb12d0deb85557959cc632dc5434690475343972472
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C:\Users\Admin\Documents\sdiagnhost.exeMD5
cfe5ae9a0f302c45a5cbc5c4e8970808
SHA186844e18e04d5380e90c2dd5c81fc95969205dec
SHA256a132c7601841ee4eb8160f0fd62fe28385cb0dd62bec53cb048669ff00202279
SHA512724d097d6c1dae19dec76d692ed65f542fa67f0646ce0b35c39cf287a7bf4a49acd393bd0180f5ebdc5dbeb12d0deb85557959cc632dc5434690475343972472
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\Users\Admin\Documents\sdiagnhost.exeMD5
cfe5ae9a0f302c45a5cbc5c4e8970808
SHA186844e18e04d5380e90c2dd5c81fc95969205dec
SHA256a132c7601841ee4eb8160f0fd62fe28385cb0dd62bec53cb048669ff00202279
SHA512724d097d6c1dae19dec76d692ed65f542fa67f0646ce0b35c39cf287a7bf4a49acd393bd0180f5ebdc5dbeb12d0deb85557959cc632dc5434690475343972472
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\Users\Admin\Documents\sdiagnhost.exeMD5
cfe5ae9a0f302c45a5cbc5c4e8970808
SHA186844e18e04d5380e90c2dd5c81fc95969205dec
SHA256a132c7601841ee4eb8160f0fd62fe28385cb0dd62bec53cb048669ff00202279
SHA512724d097d6c1dae19dec76d692ed65f542fa67f0646ce0b35c39cf287a7bf4a49acd393bd0180f5ebdc5dbeb12d0deb85557959cc632dc5434690475343972472
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memory/920-77-0x00000000004251FE-mapping.dmp
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memory/920-81-0x0000000000340000-0x0000000000341000-memory.dmpFilesize
4KB
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memory/920-76-0x0000000000400000-0x000000000042A000-memory.dmpFilesize
168KB
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memory/920-82-0x0000000000341000-0x0000000000342000-memory.dmpFilesize
4KB
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memory/1036-80-0x00000000003A0000-0x00000000003A1000-memory.dmpFilesize
4KB
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memory/1036-73-0x000000000042557E-mapping.dmp
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memory/1036-72-0x0000000000400000-0x000000000042A000-memory.dmpFilesize
168KB
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memory/1200-65-0x0000000000000000-mapping.dmp
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memory/1200-71-0x0000000002016000-0x0000000002027000-memory.dmpFilesize
68KB
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memory/1200-69-0x0000000002010000-0x0000000002011000-memory.dmpFilesize
4KB
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memory/1200-70-0x0000000002011000-0x0000000002012000-memory.dmpFilesize
4KB
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memory/1676-59-0x0000000075971000-0x0000000075973000-memory.dmpFilesize
8KB
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memory/1676-62-0x00000000006B6000-0x00000000006C7000-memory.dmpFilesize
68KB
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memory/1676-60-0x00000000006B0000-0x00000000006B1000-memory.dmpFilesize
4KB
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memory/1676-61-0x00000000006B1000-0x00000000006B2000-memory.dmpFilesize
4KB