efb99dabdc2014a65a03044be4e477a643c4cbae9e02ec184ace4f212860898f

General

Target

Documents_2014081229.xls
Size

273KB
MD5

63a68ba95fca6c9b586b1b7aaa8181df
SHA1

afc6a930be981fea43f942f0fb7b71cf941d573b
SHA256

efb99dabdc2014a65a03044be4e477a643c4cbae9e02ec184ace4f212860898f
SHA512

fecb625fb7a6befcde453ff4b3792dfeed5dde73d8ba73096faafdbc9b092271cd344a4cdd7b2f9538255d58151e4a3a70bf2f4b680110881f02c2ecc3bb6d45

Score

10^/10

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	3728	1108	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 4 IoCs

Processes:

msiexec.exe

flow pid process

31 1172 msiexec.exe
33 1172 msiexec.exe
35 1172 msiexec.exe
37 1172 msiexec.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

848 rundll32.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 848 set thread context of 1172 848 rundll32.exe msiexec.exe

flow	pid	process
31	1172	msiexec.exe
33	1172	msiexec.exe
35	1172	msiexec.exe
37	1172	msiexec.exe

pid	process
848	rundll32.exe

description	pid	process	target process
PID 848 set thread context of 1172	848	rundll32.exe	msiexec.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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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 opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1108 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1172 msiexec.exe
Token: SeSecurityPrivilege 1172 msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1172	msiexec.exe
Token: SeSecurityPrivilege	1172	msiexec.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 1108 wrote to memory of 3728	1108	EXCEL.EXE	rundll32.exe
PID 1108 wrote to memory of 3728	1108	EXCEL.EXE	rundll32.exe
PID 3728 wrote to memory of 848	3728	rundll32.exe	rundll32.exe
PID 3728 wrote to memory of 848	3728	rundll32.exe	rundll32.exe
PID 3728 wrote to memory of 848	3728	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 1172	848	rundll32.exe	msiexec.exe
PID 848 wrote to memory of 1172	848	rundll32.exe	msiexec.exe
PID 848 wrote to memory of 1172	848	rundll32.exe	msiexec.exe
PID 848 wrote to memory of 1172	848	rundll32.exe	msiexec.exe
PID 848 wrote to memory of 1172	848	rundll32.exe	msiexec.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_2014081229.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\sfdgsd.dss,DllRegisterServer
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3728

C:\Windows\SysWOW64\rundll32.exe
rundll32 ..\sfdgsd.dss,DllRegisterServer
3⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
4⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:1172

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\sfdgsd.dss
MD5
c6b02277b3dd7e0fd1133cf9290cdef6

SHA1
754cc1546ceafe9f62db188e214d5696aed609d5

SHA256
d20f5e6ff3b8af7d2adb395d2fc57b5c35343fc7b17865ccbbc66b66711a3b4c

SHA512
e5702c48ce1dcdde8c059502f4c316ec31dd02ff0995ce33ebadbca913d31d0e213089c162e8cdbe356f7ca806e00ffe5f00f4ccc7ed97b6a09966fad392a701

Download Submit
\Users\Admin\sfdgsd.dss
MD5
c6b02277b3dd7e0fd1133cf9290cdef6

SHA1
754cc1546ceafe9f62db188e214d5696aed609d5

SHA256
d20f5e6ff3b8af7d2adb395d2fc57b5c35343fc7b17865ccbbc66b66711a3b4c

SHA512
e5702c48ce1dcdde8c059502f4c316ec31dd02ff0995ce33ebadbca913d31d0e213089c162e8cdbe356f7ca806e00ffe5f00f4ccc7ed97b6a09966fad392a701

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memory/848-11-0x0000000073650000-0x0000000073679000-memory.dmp

Filesize
164KB

Download
memory/848-9-0x0000000000000000-mapping.dmp

Download
memory/848-12-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download
memory/1108-5-0x00007FFC483F0000-0x00007FFC48A27000-memory.dmp

Filesize
6.2MB

Download
memory/1108-6-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

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memory/1108-4-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1108-3-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1108-2-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1172-13-0x0000000000000000-mapping.dmp

Download
memory/1172-14-0x0000000002160000-0x0000000002189000-memory.dmp

Filesize
164KB

Download
memory/3728-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads