9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b

Analysis

max time kernel
23s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 09:25

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General

Target

9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Size

71KB
MD5

2e9fbc06ef12c20cd50710715b28bcde
SHA1

4c6f2dbcffc312d8be5dc4a2a84e5402b6564200
SHA256

9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b
SHA512

5ae9b261468cfef7dd6b2e5cd5791c64a50e49f17ae288f4a445c681dbef8f6ff43a5bcb046e7bb47eec3189b50cfda34bbb94f172a5f58956739673d48b538c
SSDEEP

1536:7Exh3Qpt5ZAW4yoCp2ftFbMk+lkoODbos1rkdYthCX/3QQijs4GS5R:7O3QHrAlLCAfkbk3Dbos1rkGhuvQRQE

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
932	TAEKMAN.exe

Deletes itself 1 IoCs

pid	Process
1528	cmd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\regedit.ico	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
File created	C:\Windows\TAEKMAN.exe	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe

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

System Information Discovery
T1082

Modifies registry class 30 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\ÊôÐÔ(&D)\Command\ = "Rundll32.exe Shell32.dll,Control_RunDLL Inetcpl.cpl"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\ÊôÐÔ(&D)\Command	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\Open(&O)	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\Open(&O)\ = "Open(&O)"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\DefaultIcon\ = "C:\\Windows\\regedit.ico"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\ÊôÐÔ(&D)\Command	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\ShellFolder	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\Open(&O)\Command\ = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE %1 h%t%t%p:%//%w%w%w.%zh%a%oi%e.%c%o%m"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\DefaultIcon	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\Open(&O)	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ShellFolder	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\ShellFolder\Attributes = "10"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\ÊôÐÔ(&D)	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\Open(&O)\ = "Open(&O)"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\DefaultIcon	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\DefaultIcon\ = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\Open(&O)\Command	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\ÊôÐÔ(&D)	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\Open(&O)\Command\ = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE "	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\ = "Internet Explorer"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\ShellFolder\Attributes = "10"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{DF98EB15-3044-6340-85B4-F6931B3A61A0}\Shell\ÊôÐÔ(&D)\Command\ = "Rundll32.exe Shell32.dll,Control_RunDLL Inetcpl.cpl"	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Shell\Open(&O)\Command	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 932	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	28
PID 1340 wrote to memory of 1528	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	30
PID 1340 wrote to memory of 1528	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	30
PID 1340 wrote to memory of 1528	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	30
PID 1340 wrote to memory of 1528	1340	9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe	30

C:\Users\Admin\AppData\Local\Temp\9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe
"C:\Users\Admin\AppData\Local\Temp\9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe"
1⤵
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Windows\TAEKMAN.exe
  "C:\Windows\TAEKMAN.exe"
  2⤵
  - Executes dropped EXE
  PID:932
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del "C:\Users\Admin\AppData\Local\Temp\9fb77699ac34753ee2bb76e46cc1087a1b6f24447c6b93f0d8b7f2090f4c9b4b.exe"
  2⤵
  - Deletes itself
  PID:1528

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\TAEKMAN.exe

Filesize
4KB

MD5
a526beece30f7c0288c60590808aef7d

SHA1
5458bcd3947bba076fd5bd6af6c6628048f6bbfb

SHA256
f13140af92e2f09c56b0e91cbd56d53d4eebbe937deeace3939c4353073b1cd3

SHA512
3678e1583c0203267f5af0dba0a2d928857f408d7223c9be75633b110a6159bb92fa0b1424d22fc62ee120d0bcd50eb655a6e1ced399bef55d25800c74b72feb

Download Submit
C:\Windows\TAEKMAN.exe

Filesize
4KB

MD5
a526beece30f7c0288c60590808aef7d

SHA1
5458bcd3947bba076fd5bd6af6c6628048f6bbfb

SHA256
f13140af92e2f09c56b0e91cbd56d53d4eebbe937deeace3939c4353073b1cd3

SHA512
3678e1583c0203267f5af0dba0a2d928857f408d7223c9be75633b110a6159bb92fa0b1424d22fc62ee120d0bcd50eb655a6e1ced399bef55d25800c74b72feb

Download Submit
memory/1340-54-0x0000000076411000-0x0000000076413000-memory.dmp

Filesize
8KB

Download
memory/1340-55-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1340-61-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download