28aa0371eff399c03d0ba976b8ecd3eb2c191fccd52775c669e37bdfa5eef0bd

General

Target

Documents_593342397_2054746689.xls
Size

293KB
MD5

389033e6344dfd187f5e11eb84879faf
SHA1

49e245741d6f4529e729da82573f950e91716e8e
SHA256

28aa0371eff399c03d0ba976b8ecd3eb2c191fccd52775c669e37bdfa5eef0bd
SHA512

ad8bd29be1b13972db777013e4c5c04be9fd3b66c09efd4a285e83bd6936801258604fcdcd28c3678ff7879f9c7056f28e8136bf037573cad168296821c33695

Score

10^/10

persistence

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	580	804	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

38 2440 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 4 IoCs

Processes:

rundll32.exerundll32.exerundll32.exerundll32.exe

pid process

580 rundll32.exe
1148 rundll32.exe
416 rundll32.exe
2440 rundll32.exe

flow	pid	process
38	2440	rundll32.exe

pid	process
580	rundll32.exe
1148	rundll32.exe
416	rundll32.exe
2440	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\L1KI762FKK = "C:\\Windows\\SYSTEM32\\rundll32.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\XL8EFCF.dll,StartW HML26J"	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXEPING.EXE

pid process

3544 PING.EXE
2840 PING.EXE
1800 PING.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

804 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

580 rundll32.exe
580 rundll32.exe

pid	process
3544	PING.EXE
2840	PING.EXE
1800	PING.EXE

pid	process
580	rundll32.exe
580	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

EXCEL.EXErundll32.execmd.exerundll32.execmd.exerundll32.execmd.exe

description	pid	process	target process
PID 804 wrote to memory of 580	804	EXCEL.EXE	rundll32.exe
PID 804 wrote to memory of 580	804	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 2704	580	rundll32.exe	cmd.exe
PID 580 wrote to memory of 2704	580	rundll32.exe	cmd.exe
PID 2704 wrote to memory of 3544	2704	cmd.exe	PING.EXE
PID 2704 wrote to memory of 3544	2704	cmd.exe	PING.EXE
PID 2704 wrote to memory of 1148	2704	cmd.exe	rundll32.exe
PID 2704 wrote to memory of 1148	2704	cmd.exe	rundll32.exe
PID 1148 wrote to memory of 1164	1148	rundll32.exe	cmd.exe
PID 1148 wrote to memory of 1164	1148	rundll32.exe	cmd.exe
PID 1164 wrote to memory of 2840	1164	cmd.exe	PING.EXE
PID 1164 wrote to memory of 2840	1164	cmd.exe	PING.EXE
PID 1164 wrote to memory of 416	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 416	1164	cmd.exe	rundll32.exe
PID 416 wrote to memory of 2212	416	rundll32.exe	cmd.exe
PID 416 wrote to memory of 2212	416	rundll32.exe	cmd.exe
PID 2212 wrote to memory of 1800	2212	cmd.exe	PING.EXE
PID 2212 wrote to memory of 1800	2212	cmd.exe	PING.EXE
PID 2212 wrote to memory of 2440	2212	cmd.exe	rundll32.exe
PID 2212 wrote to memory of 2440	2212	cmd.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Documents_593342397_2054746689.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:804

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\fmfkdnsm.nnd,StartW
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SYSTEM32\cmd.exe
cmd /c ping 8.8.7.7 -n 2 & start C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\fmfkdnsm.nnd,StartW LNQ30
3⤵
- Suspicious use of WriteProcessMemory
PID:2704

C:\Windows\system32\PING.EXE
ping 8.8.7.7 -n 2
4⤵
- Runs ping.exe
PID:3544

C:\Windows\SYSTEM32\rundll32.exe
C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\fmfkdnsm.nnd,StartW LNQ30
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\SYSTEM32\cmd.exe
cmd /c ping 8.8.7.7 -n 2 & start C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\XL8EFCF.dll,StartW H4XE
5⤵
- Suspicious use of WriteProcessMemory
PID:1164

C:\Windows\system32\PING.EXE
ping 8.8.7.7 -n 2
6⤵
- Runs ping.exe
PID:2840

C:\Windows\SYSTEM32\rundll32.exe
C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\XL8EFCF.dll,StartW H4XE
6⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:416

C:\Windows\SYSTEM32\cmd.exe
cmd /c ping 8.8.7.7 -n 2 & start C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\XL8EFCF.dll,StartW HML26J
7⤵
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\system32\PING.EXE
ping 8.8.7.7 -n 2
8⤵
- Runs ping.exe
PID:1800

C:\Windows\SYSTEM32\rundll32.exe
C:\Windows\SYSTEM32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\XL8EFCF.dll,StartW HML26J
8⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:2440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\XL8EFCF.dll
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
C:\Users\Admin\fmfkdnsm.nnd
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\AppData\Local\Temp\XL8EFCF.dll
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\AppData\Local\Temp\XL8EFCF.dll
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\fmfkdnsm.nnd
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
\Users\Admin\fmfkdnsm.nnd
MD5
5f36a28c2dcba68802994d1b4873e41e

SHA1
84ce20644fb36b7059d58125da8c900dbf73ba21

SHA256
42465a486e5d04b9bc0c8ae10c03c6145cf77f7afabd1b2871af7184e29f27a6

SHA512
3dd7582f8600fc35ff0a91e5caceae9d801a2b092e1657bfe56929283cb6b8c1382411223e043e9b7840a74f69f1bd9e04372ae693cf115a70d7c7fe5389dfd6

Download Submit
memory/416-188-0x0000000000000000-mapping.dmp

Download
memory/580-179-0x0000000000000000-mapping.dmp

Download
memory/804-122-0x00007FFD4B720000-0x00007FFD4C80E000-memory.dmp

Filesize
16.9MB

Download
memory/804-118-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/804-114-0x00007FF608DF0000-0x00007FF60C3A6000-memory.dmp

Filesize
53.7MB

Download
memory/804-115-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/804-116-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/804-121-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/804-123-0x00007FFD49820000-0x00007FFD4B715000-memory.dmp

Filesize
31.0MB

Download
memory/804-117-0x00007FFD2ADC0000-0x00007FFD2ADD0000-memory.dmp

Filesize
64KB

Download
memory/1148-184-0x0000000000000000-mapping.dmp

Download
memory/1164-186-0x0000000000000000-mapping.dmp

Download
memory/1800-192-0x0000000000000000-mapping.dmp

Download
memory/2212-191-0x0000000000000000-mapping.dmp

Download
memory/2440-193-0x0000000000000000-mapping.dmp

Download
memory/2704-182-0x0000000000000000-mapping.dmp

Download
memory/2840-187-0x0000000000000000-mapping.dmp

Download
memory/3544-183-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads