Analysis
- max time kernel
76s - max time network
113s - platform
windows10_x64 - resource
win10v200722 - submitted
07/09/2020, 08:59
Static task
static1
Behavioral task
behavioral1
Sample
bc8704a90dfd3b1e4904da0af4b1b588.exe
Resource
win7
0 signatures
0 seconds
General
- Target bc8704a90dfd3b1e4904da0af4b1b588.exe
- Size 476KB
- Sample200907-djq9plhamn
- SHA256 9aaa435667bdb311821884dbb7bb6866fe8daa5a09edaf9d5c0d2856827edcfe
- MD5 bc8704a90dfd3b1e4904da0af4b1b588
- SHA1 e2d17234f2fa57ace6eb5b9ec9e86bbb1d37253d
- SHA512 7b926fb07089f8394e873d489971497521a963fc2ed097da66f756a1d0877d93a605b8f5fba42b5f3e2c02869c600d59c041b961746afba9f18c44a9f0bbe2b6
- MD5 SHA1 SHA512
Malware Config
Signatures
- Loads dropped DLL 2 IoCs
pid Process 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe - Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- JavaScript code in executable 1 IoCs
resource yara_rule behavioral2/files/0x0004000000015654-72.dat js - Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 14 ip-api.com - Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat svchost.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 bc8704a90dfd3b1e4904da0af4b1b588.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString bc8704a90dfd3b1e4904da0af4b1b588.exe - Kills process with taskkill 1 IoCs
pid Process 3980 taskkill.exe - Modifies data under HKEY_USERS 5 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 556e9c670585d601 svchost.exe Set value (int) \REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0" svchost.exe Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad svchost.exe Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7 svchost.exe Set value (int) \REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1" svchost.exe - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 508 bc8704a90dfd3b1e4904da0af4b1b588.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeShutdownPrivilege 612 svchost.exe Token: SeCreatePagefilePrivilege 612 svchost.exe Token: SeDebugPrivilege 3980 taskkill.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 508 wrote to memory of 3720 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 76 PID 508 wrote to memory of 3720 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 76 PID 508 wrote to memory of 3720 508 bc8704a90dfd3b1e4904da0af4b1b588.exe 76 PID 3720 wrote to memory of 3980 3720 cmd.exe 78 PID 3720 wrote to memory of 3980 3720 cmd.exe 78 PID 3720 wrote to memory of 3980 3720 cmd.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\bc8704a90dfd3b1e4904da0af4b1b588.exe"C:\Users\Admin\AppData\Local\Temp\bc8704a90dfd3b1e4904da0af4b1b588.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:508 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im bc8704a90dfd3b1e4904da0af4b1b588.exe /f & erase C:\Users\Admin\AppData\Local\Temp\bc8704a90dfd3b1e4904da0af4b1b588.exe & exit2⤵
- Suspicious use of WriteProcessMemory
PID:3720 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im bc8704a90dfd3b1e4904da0af4b1b588.exe /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3980
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:612