46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
129s
max time network
78s
platform
windows7_x64
resource
win7
submitted
11-08-2020 12:30

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General

Target

foo/27601d095e5b3761d9289584415a73cc.exe

Score

8^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
872	WombatStarter.exe
1428	HPWombatSrv.exe
1108	WombatStarter.exe

Loads dropped DLL 13 IoCs

pid	Process
1100	27601d095e5b3761d9289584415a73cc.exe
1100	27601d095e5b3761d9289584415a73cc.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1428	HPWombatSrv.exe
1100	27601d095e5b3761d9289584415a73cc.exe
1100	27601d095e5b3761d9289584415a73cc.exe
1100	27601d095e5b3761d9289584415a73cc.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 8 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\HPWombat\Resources\Icons\Browsers\3.ico	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\Resources\Icons\Browsers\4.ico	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\Resources\Icons\Browsers\5.ico	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\HPWombatSrv.exe	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\WombatStarter.exe	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\uninstaller.exe	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\Resources\Icons\Browsers\1.ico	27601d095e5b3761d9289584415a73cc.exe
File created	C:\Program Files (x86)\HPWombat\Resources\Icons\Browsers\2.ico	27601d095e5b3761d9289584415a73cc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\24\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000	HPWombatSrv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\24\52C64B7E\@"%windir%\System32\ie4uinit.exe",-732 = "Finds and displays information and Web sites on the Internet."	HPWombatSrv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\24\52C64B7E\@"%windir%\System32\ie4uinit.exe",-738 = "Start Internet Explorer without ActiveX controls or browser extensions."	HPWombatSrv.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1100	27601d095e5b3761d9289584415a73cc.exe
1100	27601d095e5b3761d9289584415a73cc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 872	1100	27601d095e5b3761d9289584415a73cc.exe	24
PID 1100 wrote to memory of 872	1100	27601d095e5b3761d9289584415a73cc.exe	24
PID 1100 wrote to memory of 872	1100	27601d095e5b3761d9289584415a73cc.exe	24
PID 1100 wrote to memory of 872	1100	27601d095e5b3761d9289584415a73cc.exe	24
PID 1100 wrote to memory of 1108	1100	27601d095e5b3761d9289584415a73cc.exe	27
PID 1100 wrote to memory of 1108	1100	27601d095e5b3761d9289584415a73cc.exe	27
PID 1100 wrote to memory of 1108	1100	27601d095e5b3761d9289584415a73cc.exe	27
PID 1100 wrote to memory of 1108	1100	27601d095e5b3761d9289584415a73cc.exe	27

C:\Users\Admin\AppData\Local\Temp\foo\27601d095e5b3761d9289584415a73cc.exe
"C:\Users\Admin\AppData\Local\Temp\foo\27601d095e5b3761d9289584415a73cc.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Program Files (x86)\HPWombat\WombatStarter.exe
  "C:\Program Files (x86)\HPWombat\WombatStarter.exe" "install_and_start_srv" "C:\Users\Admin\AppData\Local\Temp\foo\27601d095e5b3761d9289584415a73cc.exe"
  2⤵
  - Executes dropped EXE
  PID:872
- C:\Program Files (x86)\HPWombat\WombatStarter.exe
  "C:\Program Files (x86)\HPWombat\WombatStarter.exe" "write_patch_str_to_reg" "C:\Users\Admin\AppData\Local\Temp\foo\27601d095e5b3761d9289584415a73cc.exe" "HKLM" Software\HPWombat "jeromu"
  2⤵
  - Executes dropped EXE
  PID:1108

C:\Program Files (x86)\HPWombat\HPWombatSrv.exe
"C:\Program Files (x86)\HPWombat\HPWombatSrv.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies data under HKEY_USERS
PID:1428

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1836-19-0x000007FEF7920000-0x000007FEF7B9A000-memory.dmp

Filesize
2.5MB

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