90321be8cee235e44256be0128519bca1eaebf5b52880a1c0d9b3d087795c489

Analysis

max time kernel
118s
max time network
140s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06/01/2024, 23:27

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General

Target

4770b1b34dd46ebbf01d2aae352cd199.exe
Size

11KB
MD5

4770b1b34dd46ebbf01d2aae352cd199
SHA1

ad4d4e37a5c071c3f0ca064bae415a5f1e7f53bb
SHA256

90321be8cee235e44256be0128519bca1eaebf5b52880a1c0d9b3d087795c489
SHA512

7ff45339d8d1f1a91e8388d27c94672d9989b20eb65c147d6e0d0ca64cccc5f66295ba4e2dab4cff46e8665c71208f304b7a2d3579714cd22346f9004dff4b30
SSDEEP

192:Iuh4jDHPGc0eFNzdXYmpE3pTmTIWU8HWqOANOXMde61EattPmXFNYf+553N5kVmm:mjDOc0eb6m8ZmT3U4Wq9O9+EUtPSFNYn

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 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\ShellServiceObjectDelayLoad\kbdswjr.dll = "{00120012-0012-0012-0012-00120012BB15}"	4770b1b34dd46ebbf01d2aae352cd199.exe

Deletes itself 1 IoCs

pid	Process
2912	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2540	4770b1b34dd46ebbf01d2aae352cd199.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\kbdswjr.tmp	4770b1b34dd46ebbf01d2aae352cd199.exe
File opened for modification	C:\Windows\SysWOW64\kbdswjr.tmp	4770b1b34dd46ebbf01d2aae352cd199.exe
File opened for modification	C:\Windows\SysWOW64\kbdswjr.nls	4770b1b34dd46ebbf01d2aae352cd199.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00120012-0012-0012-0012-00120012BB15}	4770b1b34dd46ebbf01d2aae352cd199.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00120012-0012-0012-0012-00120012BB15}\InProcServer32	4770b1b34dd46ebbf01d2aae352cd199.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00120012-0012-0012-0012-00120012BB15}\InProcServer32\ = "C:\\Windows\\SysWow64\\kbdswjr.dll"	4770b1b34dd46ebbf01d2aae352cd199.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00120012-0012-0012-0012-00120012BB15}\InProcServer32\ThreadingModel = "Apartment"	4770b1b34dd46ebbf01d2aae352cd199.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2540	4770b1b34dd46ebbf01d2aae352cd199.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2540	4770b1b34dd46ebbf01d2aae352cd199.exe
2540	4770b1b34dd46ebbf01d2aae352cd199.exe
2540	4770b1b34dd46ebbf01d2aae352cd199.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2912	2540	4770b1b34dd46ebbf01d2aae352cd199.exe	29
PID 2540 wrote to memory of 2912	2540	4770b1b34dd46ebbf01d2aae352cd199.exe	29
PID 2540 wrote to memory of 2912	2540	4770b1b34dd46ebbf01d2aae352cd199.exe	29
PID 2540 wrote to memory of 2912	2540	4770b1b34dd46ebbf01d2aae352cd199.exe	29

C:\Users\Admin\AppData\Local\Temp\4770b1b34dd46ebbf01d2aae352cd199.exe
"C:\Users\Admin\AppData\Local\Temp\4770b1b34dd46ebbf01d2aae352cd199.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\DEEA.tmp.bat
  2⤵
  - Deletes itself
  PID:2912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DEEA.tmp.bat

Filesize
179B

MD5
cc18dd1180d972b944d9adb3627fcab8

SHA1
8c75b492b1e3b9ccf3d60d9abdd90bc8136e4009

SHA256
7f5b3f0020be23a8b657d8649688fb70fc24b90497074cf6c100a7296b97303e

SHA512
1569074aabf4dd6d39487ca142baba9dbeaf04ec4a40d161ebcb806137fa9dd003543568fa9461fac4c5ea1f2808d41c6ba6dfbcf0562657e69b8edf19a5107f

Download Submit
C:\Windows\SysWOW64\kbdswjr.tmp

Filesize
967KB

MD5
0527372008b21552b41ddf4a6e0319d1

SHA1
a7ce48002235d13d954da439e8f11a326661058d

SHA256
f01152ffe16b617f512f7a2a215260c3c9fd45bd8d6369b076b4e5a7031100d8

SHA512
d00d3dceb8f403fadf82ce55ad30406535806828546e65844a882a4d8e53a476726a7a20f390215c0134851259d5086e1870319a3a85fe833aa364897217ebec

Download Submit
memory/2540-12-0x0000000020000000-0x0000000020008000-memory.dmp

Filesize
32KB

Download
memory/2540-22-0x0000000020000000-0x0000000020008000-memory.dmp

Filesize
32KB

Download