metasploit | 12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

Analysis

max time kernel
144s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
19-09-2022 02:58

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General

Target

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
Size

224KB
MD5

dee61e699e48a2b182d58627dc8098ca
SHA1

021e253fccf06320a951dc0844509f50bd286b47
SHA256

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d
SHA512

add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc
SSDEEP

3072:WkMlKuJpIOlgpX2tt1a6REPK2TxbFl3JD+VcNezhUs0bRLNmt1:X+9rkpXSkomZT1Pbezx0FLNk

Score

10^/10

metasploit backdoor trojan upx

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit
Executes dropped EXE 3 IoCs

Processes:

taskmn32.exetaskmn32.exetaskmn32.exe

pid process

524 taskmn32.exe
1532 taskmn32.exe
280 taskmn32.exe

pid	process
524	taskmn32.exe
1532	taskmn32.exe
280	taskmn32.exe

UPX packed file 11 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/948-56-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/948-58-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/948-59-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/948-64-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/948-65-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/948-66-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/948-71-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1532-86-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1532-87-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1532-88-0x0000000000400000-0x0000000000466000-memory.dmp	upx
behavioral1/memory/1532-94-0x0000000000400000-0x0000000000466000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

taskmn32.exe

pid process

1532 taskmn32.exe

pid	process
1532	taskmn32.exe

Loads dropped DLL 6 IoCs

Processes:

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exetaskmn32.exetaskmn32.exe

pid	process
948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
524	taskmn32.exe
524	taskmn32.exe
1532	taskmn32.exe
1532	taskmn32.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exetaskmn32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	taskmn32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	taskmn32.exe

Drops file in System32 directory 6 IoCs

Processes:

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exetaskmn32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\taskmn32.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
File created	C:\Windows\SysWOW64\taskmn32.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
File opened for modification	C:\Windows\SysWOW64\	taskmn32.exe
File opened for modification	C:\Windows\SysWOW64\taskmn32.exe	taskmn32.exe
File created	C:\Windows\SysWOW64\taskmn32.exe	taskmn32.exe
File opened for modification	C:\Windows\SysWOW64\	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exetaskmn32.exe

description	pid	process	target process
PID 2028 set thread context of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 524 set thread context of 1532	524	taskmn32.exe	taskmn32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exetaskmn32.exe

pid	process
948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
1532	taskmn32.exe
1532	taskmn32.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exetaskmn32.exetaskmn32.exe

description	pid	process	target process
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 2028 wrote to memory of 948	2028	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
PID 948 wrote to memory of 524	948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	taskmn32.exe
PID 948 wrote to memory of 524	948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	taskmn32.exe
PID 948 wrote to memory of 524	948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	taskmn32.exe
PID 948 wrote to memory of 524	948	12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 524 wrote to memory of 1532	524	taskmn32.exe	taskmn32.exe
PID 1532 wrote to memory of 280	1532	taskmn32.exe	taskmn32.exe
PID 1532 wrote to memory of 280	1532	taskmn32.exe	taskmn32.exe
PID 1532 wrote to memory of 280	1532	taskmn32.exe	taskmn32.exe
PID 1532 wrote to memory of 280	1532	taskmn32.exe	taskmn32.exe

C:\Users\Admin\AppData\Local\Temp\12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
"C:\Users\Admin\AppData\Local\Temp\12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2028

C:\Users\Admin\AppData\Local\Temp\12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe
"C:\Users\Admin\AppData\Local\Temp\12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d.exe"
2⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\taskmn32.exe
"C:\Windows\system32\taskmn32.exe" C:\Users\Admin\AppData\Local\Temp\12C755~1.EXE
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:524

C:\Windows\SysWOW64\taskmn32.exe
"C:\Windows\system32\taskmn32.exe" C:\Users\Admin\AppData\Local\Temp\12C755~1.EXE
4⤵
- Executes dropped EXE
- Deletes itself
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1532

C:\Windows\SysWOW64\taskmn32.exe
"C:\Windows\system32\taskmn32.exe" C:\Windows\SysWOW64\taskmn32.exe
5⤵
- Executes dropped EXE
PID:280

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
C:\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
C:\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
C:\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
\Windows\SysWOW64\taskmn32.exe

Filesize
224KB

MD5
dee61e699e48a2b182d58627dc8098ca

SHA1
021e253fccf06320a951dc0844509f50bd286b47

SHA256
12c7556f2716936e43a42bf712b728287e8f6b36d768bc342b01bf90d540fc6d

SHA512
add37bd956ed096a4bf888e4b3d3eba956c42b4edb67fa76539e625a2ec172e90c11f00b4b77936046e1b894b24f8cf8c4a3bfc4091fcd676d39525ed10803cc

Download Submit
memory/280-92-0x0000000000000000-mapping.dmp

Download
memory/280-95-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/524-83-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/524-69-0x0000000000000000-mapping.dmp

Download
memory/524-72-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/948-64-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-58-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-66-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-65-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-55-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-63-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/948-56-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-71-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-59-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/948-60-0x0000000000463F10-mapping.dmp

Download
memory/1532-88-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1532-87-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1532-86-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1532-81-0x0000000000463F10-mapping.dmp

Download
memory/1532-90-0x0000000002DA0000-0x0000000002DEB000-memory.dmp

Filesize
300KB

Download
memory/1532-94-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2028-61-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2028-54-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download