ee5dd15af86c986f29a20709faf263065a005512c0281d3769d89d02158421f5

General

Target

Paid invoice.cmd
Size

5.2MB
MD5

73545bdba7c3386f0ea604dd3ab69765
SHA1

12f3c0dff67e757519b75a506fad8ae52299d9a6
SHA256

18a7fccc4558d6ae5543abcf40c12698f413acc5a9369b1e08540873c0403f12
SHA512

0a74e70dcc09641b0e140ab433910582297466539cbe6d114ba772459f7694c9e51a256e699f644588a60df64b78f6a9c60055a902b3b1e51010f17b31e50b7c
SSDEEP

49152:Lk9AW3aaP88fGYZDv9IRS4GCRoOXKA+z5X6WE64PuXdDzuZMxxPKp4YkmFhVPSV2:b

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 8 IoCs

Processes:

alpha.exealpha.exekn.exealpha.exekn.exespoolsv.COMalpha.exealpha.exe

pid process

2336 alpha.exe
2640 alpha.exe
1932 kn.exe
2648 alpha.exe
2244 kn.exe
2704 spoolsv.COM
2804 alpha.exe
2936 alpha.exe
Loads dropped DLL 7 IoCs

Processes:

cmd.exealpha.exealpha.exe

pid process

876 cmd.exe
876 cmd.exe
2640 alpha.exe
876 cmd.exe
2648 alpha.exe
876 cmd.exe
876 cmd.exe
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

spoolsv.COM

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language spoolsv.COM
Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

Processes:

spoolsv.COM

pid process

2704 spoolsv.COM

pid	process
2336	alpha.exe
2640	alpha.exe
1932	kn.exe
2648	alpha.exe
2244	kn.exe
2704	spoolsv.COM
2804	alpha.exe
2936	alpha.exe

pid	process
876	cmd.exe
876	cmd.exe
2640	alpha.exe
876	cmd.exe
2648	alpha.exe
876	cmd.exe
876	cmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.COM

pid	process
2704	spoolsv.COM

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

cmd.exealpha.exealpha.exealpha.exe

description	pid	process	target process
PID 876 wrote to memory of 2096	876	cmd.exe	extrac32.exe
PID 876 wrote to memory of 2096	876	cmd.exe	extrac32.exe
PID 876 wrote to memory of 2096	876	cmd.exe	extrac32.exe
PID 876 wrote to memory of 2336	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2336	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2336	876	cmd.exe	alpha.exe
PID 2336 wrote to memory of 2636	2336	alpha.exe	extrac32.exe
PID 2336 wrote to memory of 2636	2336	alpha.exe	extrac32.exe
PID 2336 wrote to memory of 2636	2336	alpha.exe	extrac32.exe
PID 876 wrote to memory of 2640	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2640	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2640	876	cmd.exe	alpha.exe
PID 2640 wrote to memory of 1932	2640	alpha.exe	kn.exe
PID 2640 wrote to memory of 1932	2640	alpha.exe	kn.exe
PID 2640 wrote to memory of 1932	2640	alpha.exe	kn.exe
PID 876 wrote to memory of 2648	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2648	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2648	876	cmd.exe	alpha.exe
PID 2648 wrote to memory of 2244	2648	alpha.exe	kn.exe
PID 2648 wrote to memory of 2244	2648	alpha.exe	kn.exe
PID 2648 wrote to memory of 2244	2648	alpha.exe	kn.exe
PID 876 wrote to memory of 2704	876	cmd.exe	spoolsv.COM
PID 876 wrote to memory of 2704	876	cmd.exe	spoolsv.COM
PID 876 wrote to memory of 2704	876	cmd.exe	spoolsv.COM
PID 876 wrote to memory of 2704	876	cmd.exe	spoolsv.COM
PID 876 wrote to memory of 2804	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2804	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2804	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2936	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2936	876	cmd.exe	alpha.exe
PID 876 wrote to memory of 2936	876	cmd.exe	alpha.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Paid invoice.cmd"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\System32\extrac32.exe
  C:\\Windows\\System32\\extrac32 /C /Y C:\\Windows\\System32\\cmd.exe "C:\\Users\\Public\\alpha.exe"
  2⤵
  PID:2096
- C:\Users\Public\alpha.exe
  C:\\Users\\Public\\alpha /c extrac32 /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\system32\extrac32.exe
    extrac32 /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
    3⤵
    PID:2636
- C:\Users\Public\alpha.exe
  C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\Paid invoice.cmd" "C:\\Users\\Public\\spoolsv.MPEG" 3
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Users\Public\kn.exe
    C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\Paid invoice.cmd" "C:\\Users\\Public\\spoolsv.MPEG" 3
    3⤵
    - Executes dropped EXE
    PID:1932
- C:\Users\Public\alpha.exe
  C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\spoolsv.MPEG" "C:\\Users\\Public\\Libraries\\spoolsv.COM" 10
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Users\Public\kn.exe
    C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\spoolsv.MPEG" "C:\\Users\\Public\\Libraries\\spoolsv.COM" 10
    3⤵
    - Executes dropped EXE
    PID:2244
- C:\Users\Public\Libraries\spoolsv.COM
  C:\Users\Public\Libraries\spoolsv.COM
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  PID:2704
- C:\Users\Public\alpha.exe
  C:\\Users\\Public\\alpha /c del /q "C:\Users\Public\kn.exe" / A / F / Q / S
  2⤵
  - Executes dropped EXE
  PID:2804
- C:\Users\Public\alpha.exe
  C:\\Users\\Public\\alpha /c del /q "C:\Users\Public\spoolsv.MPEG" / A / F / Q / S
  2⤵
  - Executes dropped EXE
  PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\Libraries\spoolsv.COM

Filesize
1.1MB

MD5
61192fb7852478194b63e795a759d3b4

SHA1
53f911ebad80d7c43253a5f1c233e202036ef27b

SHA256
c6a4e23f5617854fe9d0c1e2dde29bb823c677561db038c6ee25b32c8e690fa1

SHA512
6841880bb4bee0deff36a07cc65fba69cce68156f06e7436cf1bbccfae7006b125b3354a9ab9c7e100f46ef22e22f60b83129d8e1527b22ddfeb5ea69a677e8c

Download Submit
C:\Users\Public\spoolsv.MPEG

Filesize
3.7MB

MD5
a36b0eee708f277b1fe1989da8fbad4f

SHA1
c3ee567dad84a30b50007420c492cada80ef589b

SHA256
b83e6595a3ae5f0f6989878fcc0484a67f185e7bac50bba1f68c9dd9047bcf57

SHA512
1cd30f3f6b553723256015ec2b257d4216793b537350b8fcdd431c6c9a37ac25ceb5f0d84eead63afbff89aeabe0fd8468ff6d1c60b00c501fdc8432b490509a

Download Submit
\Users\Public\alpha.exe

Filesize
337KB

MD5
5746bd7e255dd6a8afa06f7c42c1ba41

SHA1
0f3c4ff28f354aede202d54e9d1c5529a3bf87d8

SHA256
db06c3534964e3fc79d2763144ba53742d7fa250ca336f4a0fe724b75aaff386

SHA512
3a968356d7b94cc014f78ca37a3c03f354c3970c9e027ed4ccb8e59f0f9f2a32bfa22e7d6b127d44631d715ea41bf8ace91f0b4d69d1714d55552b064ffeb69e

Download Submit
\Users\Public\kn.exe

Filesize
1.1MB

MD5
ec1fd3050dbc40ec7e87ab99c7ca0b03

SHA1
ae7fdfc29f4ef31e38ebf381e61b503038b5cb35

SHA256
1e19c5a26215b62de1babd5633853344420c1e673bb83e8a89213085e17e16e3

SHA512
4e47331f2fdce77b01d86cf8e21cd7d6df13536f09b70c53e5a6b82f66512faa10e38645884c696b47a27ea6bddc6c1fdb905ee78684dca98cbda5f39fbafcc2

Download Submit
memory/2704-30-0x0000000000400000-0x0000000000519000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing