Analysis
- max time kernel
130s - max time network
151s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system - submitted
24/08/2022, 10:31
Static task
static1
Behavioral task
behavioral1
Sample
LIBRA Elektronik GmbH.PDF.exe
Resource
win7-20220812-en
7 signatures
150 seconds
General
- Target LIBRA Elektronik GmbH.PDF.exe
- Size 1.9MB
- Sample220824-mkcvdacbcp
- SHA256 a5f6b5b6909b3b40d933857cc42d284b743ce9a69ca2baaa5e75dcc4e1c15a19
- MD5 d4544d70916ea92b45a2071d8b350ab1
- SHA1 3fae8c21379443b7ac961b9055b57eb7c9ce992a
- SHA512 2cd7d720178491209df97bb735ef0c2279ac2ff302f857a39298cb370351924328344cdb811d3b3a815d2b3a0464c63881b8485622de4bf23ba36e1084f3ea52
- SSDEEP 24576:ytSn+o+PCKhc4MtzhZYRIJMELSx6siPFeJogx6SMfaLE:X+JfcxBhiRIufiNWpwSMCLE
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
asyncrat
Version
-
0.5.6
C2
-
37.0.14.196:6606
-
37.0.14.196:7707
-
37.0.14.196:8808
-
37.0.14.196:2050
Mutex
-
zosipyowgjjotojfi
Attributes
-
delay
5
-
install
false
-
install_folder
%AppData%
aes.plain
Signatures
- Async RAT payload 6 IoCs
resource yara_rule behavioral1/memory/2044-62-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/2044-63-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/2044-64-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/2044-65-0x000000000040C5FE-mapping.dmp asyncrat behavioral1/memory/2044-67-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/2044-69-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat - Loads dropped DLL 2 IoCs
pid Process 1772 LIBRA Elektronik GmbH.PDF.exe 1772 LIBRA Elektronik GmbH.PDF.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1772 set thread context of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 - Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe 2044 RegAsm.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1772 LIBRA Elektronik GmbH.PDF.exe Token: SeDebugPrivilege 2044 RegAsm.exe - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27 PID 1772 wrote to memory of 2044 1772 LIBRA Elektronik GmbH.PDF.exe 27
Processes
-
C:\Users\Admin\AppData\Local\Temp\LIBRA Elektronik GmbH.PDF.exe"C:\Users\Admin\AppData\Local\Temp\LIBRA Elektronik GmbH.PDF.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2044
-
-
C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵PID:768
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
- Path \Users\Admin\AppData\Roaming\InternalApplicationIdentit.dll
- Size 670KB
- SHA256 4e1e636d7daf18d321aba24c57564b901affc12ddfe458622f93dc63740f1487
- MD5 c9652b395870659636dc088900ff4a1f
- SHA1 8e13f8c8d79a2a895522ce849f330e48cf60b047
- SHA512 2cc0d8eba90b80fac73a5bd375506a016ab731e110a1d07ad2fdce071b9d32c36769d8253fb217fa2a6e4da425e47e3d54c517b67880c11c2cfec3488320b53d
- SSDEEP 3072:iX8BJ2FoQu5PqBjAJtxeHYYwiex8lZRx:iX8BJfQOyBjAnxe
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Roaming\InternalApplicationIdentit.dll
- Size 670KB
- SHA256 4e1e636d7daf18d321aba24c57564b901affc12ddfe458622f93dc63740f1487
- MD5 c9652b395870659636dc088900ff4a1f
- SHA1 8e13f8c8d79a2a895522ce849f330e48cf60b047
- SHA512 2cc0d8eba90b80fac73a5bd375506a016ab731e110a1d07ad2fdce071b9d32c36769d8253fb217fa2a6e4da425e47e3d54c517b67880c11c2cfec3488320b53d
- SSDEEP 3072:iX8BJ2FoQu5PqBjAJtxeHYYwiex8lZRx:iX8BJfQOyBjAnxe
- MD5 SHA1 SHA512 SSDEEP