51591f35883b685ab8d4629614d39ef3d06a64b3ce44bbfab821ada9be29f8df

Analysis

max time kernel
151s
max time network
140s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
02/11/2023, 21:41

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General

Target

NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe
Size

484KB
MD5

6558f2354d65e18e6dd92848965ca440
SHA1

fb453c960ae29e23f0afff1f584639661fdbe4d5
SHA256

51591f35883b685ab8d4629614d39ef3d06a64b3ce44bbfab821ada9be29f8df
SHA512

fec62bc7444e18800bad5cff2e00aa60f5916a1c2b69112240cfd8ac6e8de8a5331b754ba1ae8d925dd0dd281b80bce8ce773c5c7bd30898e37942140139f4e2
SSDEEP

12288:yLPkCDt1EG2XVekhdeT1ZfTBmYjHYJH7PEzYa:yLPkQ1bqA91Td4JbPEx

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
1088	fltMKEYs.exe
2652	~9EEE.tmp
2964	dcomcont.exe

Loads dropped DLL 3 IoCs

pid	Process
2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe
2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe
1088	fltMKEYs.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\USER\S-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows\CurrentVersion\Run\ktmulder = "C:\\Users\\Admin\\AppData\\Roaming\\calcerpt\\fltMKEYs.exe"	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dcomcont.exe	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2588	2940	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1088	fltMKEYs.exe
1264	Explorer.EXE
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe
1264	Explorer.EXE
2964	dcomcont.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1264	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	fltMKEYs.exe
Token: SeShutdownPrivilege	1264	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 1088	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	28
PID 2940 wrote to memory of 1088	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	28
PID 2940 wrote to memory of 1088	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	28
PID 2940 wrote to memory of 1088	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	28
PID 1088 wrote to memory of 2652	1088	fltMKEYs.exe	29
PID 1088 wrote to memory of 2652	1088	fltMKEYs.exe	29
PID 1088 wrote to memory of 2652	1088	fltMKEYs.exe	29
PID 1088 wrote to memory of 2652	1088	fltMKEYs.exe	29
PID 2652 wrote to memory of 1264	2652	~9EEE.tmp	14
PID 2940 wrote to memory of 2588	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	31
PID 2940 wrote to memory of 2588	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	31
PID 2940 wrote to memory of 2588	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	31
PID 2940 wrote to memory of 2588	2940	NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1264
- C:\Users\Admin\AppData\Local\Temp\NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe
  "C:\Users\Admin\AppData\Local\Temp\NEAS.6558f2354d65e18e6dd92848965ca440_JC.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Users\Admin\AppData\Roaming\calcerpt\fltMKEYs.exe
    "C:\Users\Admin\AppData\Roaming\calcerpt"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1088
  - - C:\Users\Admin\AppData\Local\Temp\~9EEE.tmp
      1264 496136 1088 1
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:2652
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2940 -s 252
    3⤵
    - Program crash
    PID:2588

C:\Windows\SysWOW64\dcomcont.exe
C:\Windows\SysWOW64\dcomcont.exe -s
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2964

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~9EEE.tmp

Filesize
8KB

MD5
aac3165ece2959f39ff98334618d10d9

SHA1
020a191bfdc70c1fbd3bf74cd7479258bd197f51

SHA256
96fa6a7714670823c83099ea01d24d6d3ae8fef027f01a4ddac14f123b1c9974

SHA512
9eb876812a6a13dd4b090788c2b1d9e9a2e25370598ed5c040f82e6f378edc4b78d58bc8f60d5a559ea57b1edcf3a144bfe09454a9928997173db8279d5b40cf

Download Submit
C:\Users\Admin\AppData\Roaming\calcerpt\fltMKEYs.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
C:\Users\Admin\AppData\Roaming\calcerpt\fltMKEYs.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
C:\Users\Admin\AppData\Roaming\calcerpt\fltMKEYs.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
C:\Windows\SysWOW64\dcomcont.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
C:\Windows\SysWOW64\dcomcont.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
\Users\Admin\AppData\Local\Temp\~9EEE.tmp

Filesize
8KB

MD5
aac3165ece2959f39ff98334618d10d9

SHA1
020a191bfdc70c1fbd3bf74cd7479258bd197f51

SHA256
96fa6a7714670823c83099ea01d24d6d3ae8fef027f01a4ddac14f123b1c9974

SHA512
9eb876812a6a13dd4b090788c2b1d9e9a2e25370598ed5c040f82e6f378edc4b78d58bc8f60d5a559ea57b1edcf3a144bfe09454a9928997173db8279d5b40cf

Download Submit
\Users\Admin\AppData\Roaming\calcerpt\fltMKEYs.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
\Users\Admin\AppData\Roaming\calcerpt\fltMKEYs.exe

Filesize
484KB

MD5
1c327e3ef924478beae7f357c4816cd0

SHA1
4b423d0d6d108f516a6f4ea62ceb294af086a02d

SHA256
c69773c421f3fce6c2a90cd4c2559a6768de2294879b1fbf4c086667fa64bef1

SHA512
ac8ad19f332145a3d4f9c3dee56ece5ac422b7023d5f804c14b5610b8acca20d0954e2207ee4ef0d8e58494b99b4b32559d7b6605e5a46d186e848a149b03c06

Download Submit
memory/1088-12-0x00000000004B0000-0x0000000000533000-memory.dmp

Filesize
524KB

Download
memory/1088-13-0x0000000000090000-0x0000000000096000-memory.dmp

Filesize
24KB

Download
memory/1264-22-0x0000000002750000-0x0000000002756000-memory.dmp

Filesize
24KB

Download
memory/1264-19-0x00000000042A0000-0x0000000004329000-memory.dmp

Filesize
548KB

Download
memory/1264-18-0x00000000042A0000-0x0000000004329000-memory.dmp

Filesize
548KB

Download
memory/1264-25-0x0000000002760000-0x000000000276D000-memory.dmp

Filesize
52KB

Download
memory/1264-17-0x00000000042A0000-0x0000000004329000-memory.dmp

Filesize
548KB

Download
memory/2940-0-0x0000000000180000-0x0000000000203000-memory.dmp

Filesize
524KB

Download
memory/2940-33-0x0000000000180000-0x0000000000203000-memory.dmp

Filesize
524KB

Download
memory/2964-30-0x0000000000430000-0x00000000004B3000-memory.dmp

Filesize
524KB

Download
memory/2964-32-0x0000000000180000-0x0000000000186000-memory.dmp

Filesize
24KB

Download
memory/2964-31-0x0000000000190000-0x0000000000196000-memory.dmp

Filesize
24KB

Download
memory/2964-34-0x0000000000180000-0x0000000000186000-memory.dmp

Filesize
24KB

Download
memory/2964-35-0x0000000000180000-0x0000000000186000-memory.dmp

Filesize
24KB

Download