b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f

General

Target

b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Size

476KB
MD5

16660854c0ecfa4814d8e27d4a6fff72
SHA1

49e1481c8b118de3d4be14ece22ea2bc166f8f4f
SHA256

b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f
SHA512

4e5ffc0a963205ace66fe15247a0e83bc1ebe9f45dfc2e169e0b9ab0fa731862598dae8fca7278f6521d950e8d68aa0a93222042717263ad8b25688b70d13106
SSDEEP

6144:EtzTdR5XkNq80PzW+Io1HySsWWoA0gTRrm8dEaJq0OMBVgWwAidpNCgrBFh:izTJbAodco3gTksJqmVgWwAkAQh

Score

7^/10

aspackv2 discovery persistence

Malware Config

Signatures

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0007000000023cae-20.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
2768	StartMenuExperienceHost.exe

Loads dropped DLL 2 IoCs

pid	Process
1004	Regsvr32.exe
1004	Regsvr32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MKKEEB.EXE = "C:\\Users\\svchost.exe"	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe

Enumerates connected drives 3 TTPs 17 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\L:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\M:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\Q:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\T:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\I:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\J:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\N:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\O:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\U:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\E:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\H:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\P:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\R:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\S:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\V:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\G:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File opened (read-only)	\??\K:	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MKKEEB.EXE	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
File created	C:\Windows\SysWOW64\Ms7002.dll	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StartMenuExperienceHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Regsvr32.exe

Modifies registry class 26 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QPWorkFile\qp7002 = "C:\\Windows\\SysWow64\\MKKEEB.EXE"	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Ms7002.ShellExecuteHook\Clsid	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QPWorkFile	StartMenuExperienceHost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}\ = "MaiHook7002"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Ms7002.ShellExecuteHook\ = "MaiHook7002"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}\ProgID	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\PerfLogs\\AHJF.EXE \"%1\""	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QPWorkFile	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Ms7002.ShellExecuteHook	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Ms7002.ShellExecuteHook\Clsid\ = "{7CD4138D-4147-420B-9749-00A13B526785}"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\PerfLogs\\AHJF.EXE %1"	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "C:\\Users\\MKKEEB.EXE \"%1\""	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\Users\\MKKEEB.EXE %1"	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}\InprocServer32	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}\InprocServer32\ = "C:\\Windows\\SysWow64\\Ms7002.dll"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}\InprocServer32\ThreadingModel = "Apartment"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7CD4138D-4147-420B-9749-00A13B526785}\ProgID\ = "Ms7002.ShellExecuteHook"	Regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2768	StartMenuExperienceHost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 1004	2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe	86
PID 2496 wrote to memory of 1004	2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe	86
PID 2496 wrote to memory of 1004	2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe	86
PID 2496 wrote to memory of 2768	2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe	87
PID 2496 wrote to memory of 2768	2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe	87
PID 2496 wrote to memory of 2768	2496	b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe	87

C:\Users\Admin\AppData\Local\Temp\b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe
"C:\Users\Admin\AppData\Local\Temp\b40a5c4c35007c52d8947f4ef0193164cced91072a7f7e87d68a82cd02416c5f.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\Regsvr32.exe
  Regsvr32.exe C:\Windows\system32\Ms7002.dll /s
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:1004
- C:\Users\StartMenuExperienceHost.exe
  C:\Users\StartMenuExperienceHost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PerfLogs\AHJF.EXE

Filesize
476KB

MD5
34b1857dd115e5b04dabe094386ecf7d

SHA1
cc9cbcae501f3f395f73ba766e51d0d8262d3ee6

SHA256
0dc58477d0a033ccbe0ec092b842eeee993f7916222ce0fc06772fff1fe0b91f

SHA512
bc0bc3ebd910b1b9ba6c37cb13c8cdfcc25f855bf66e4df97c786320d78bd7006c089c80f53ea8706d4242dbbdd12c4a2040143c54de0a9a00164b80946ecc8d

Download Submit
C:\Users\StartMenuExperienceHost.exe

Filesize
477KB

MD5
cfeb87e5a3a74957239daa281f002061

SHA1
451f3b4bba00050bb7bc184295566c34be2c0448

SHA256
2a2867594411c3915e7454031eab4600ff0d023849f8f194600c4dd6860dbedb

SHA512
5997d7428a466608daac0bb35c4563190a006ce450486ca8ebf5dfebb6ea7d283727cbf16ed84f115e42038d7594992efdb78a2b17c10acc626f6e00a229cf9e

Download Submit
C:\Windows\SysWOW64\Ms7002.dll

Filesize
52KB

MD5
876a2a99b81968f5b26e3cbe12063d2b

SHA1
7afa8f33b691b2651b65eb07220cc2fda4b7537c

SHA256
f0a7ec2edff7699e546221808f45ca8816a75eb519618283d7c4514dfb9134e0

SHA512
ca0574dbb5ff4b146679ffc38aa794e64470949cd228518d04d3680d63a1ce2f076e38494fa5b6cd0722c2dc3e35c5b5c3b63483c1fa7dc62bca42c4cf8e0ce1

Download Submit
memory/2496-0-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/2768-26-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads