vidar | 5f94fc16fc1729c7817f052cd6aaf7d1638aba942ef380b35a0003ec1f146439

General

Target

monthly financial statement.doc
Size

1.7MB
MD5

0675edf4c9212b83a850c75398f648e8
SHA1

d041f7d11a1da3a6d2db81cb84cce61c2c4e1281
SHA256

5f94fc16fc1729c7817f052cd6aaf7d1638aba942ef380b35a0003ec1f146439
SHA512

2cae441769260bdfca0a5a1ae6828e98281cfac3dc8c3e380e5390bd13a49251f1d224c00c0364cf649324364900fab9480edf946f221004c29fac9529d4b992

Score

10^/10

vidar discovery spyware stealer upx

Malware Config

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Blocklisted process makes network request 5 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1832 EQNEDT32.EXE
8 1832 EQNEDT32.EXE
10 1832 EQNEDT32.EXE
12 1832 EQNEDT32.EXE
14 1832 EQNEDT32.EXE
Executes dropped EXE 1 IoCs

Processes:

69577.exe

pid process

560 69577.exe

flow	pid	process
6	1832	EQNEDT32.EXE
8	1832	EQNEDT32.EXE
10	1832	EQNEDT32.EXE
12	1832	EQNEDT32.EXE
14	1832	EQNEDT32.EXE

pid	process
560	69577.exe

UPX packed file 5 IoCs

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

upx

Processes:

yara_rule
upx
\Users\Public\69577.exe	upx
C:\Users\Public\69577.exe	upx
\Users\Public\69577.exe	upx
C:\Users\Public\69577.exe	upx

Loads dropped DLL 6 IoCs

Processes:

EQNEDT32.EXE69577.exe

pid process

1832 EQNEDT32.EXE
1832 EQNEDT32.EXE
560 69577.exe
560 69577.exe
560 69577.exe
560 69577.exe
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
JavaScript code in executable 1 IoCs

Processes:

resource yara_rule

\ProgramData\nss3.dll js
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

18 ip-api.com
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present

pid	process
1832	EQNEDT32.EXE
1832	EQNEDT32.EXE
560	69577.exe
560	69577.exe
560	69577.exe
560	69577.exe

resource	yara_rule
\ProgramData\nss3.dll	js

flow	ioc
18	ip-api.com

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

69577.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	69577.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	69577.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1008 taskkill.exe
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1832 EQNEDT32.EXE

pid	process
1008	taskkill.exe

pid	process
1832	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1584 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

69577.exe

pid process

560 69577.exe
560 69577.exe
560 69577.exe
560 69577.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1008 taskkill.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1584 WINWORD.EXE
1584 WINWORD.EXE

pid	process
1584	WINWORD.EXE

pid	process
560	69577.exe
560	69577.exe
560	69577.exe
560	69577.exe

description	pid	process
Token: SeDebugPrivilege	1008	taskkill.exe

pid	process
1584	WINWORD.EXE
1584	WINWORD.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.execmd.exe

description	pid	process	target process
PID 1584 wrote to memory of 1168	1584	WINWORD.EXE	splwow64.exe
PID 1584 wrote to memory of 1168	1584	WINWORD.EXE	splwow64.exe
PID 1584 wrote to memory of 1168	1584	WINWORD.EXE	splwow64.exe
PID 1584 wrote to memory of 1168	1584	WINWORD.EXE	splwow64.exe
PID 1832 wrote to memory of 560	1832	EQNEDT32.EXE	69577.exe
PID 1832 wrote to memory of 560	1832	EQNEDT32.EXE	69577.exe
PID 1832 wrote to memory of 560	1832	EQNEDT32.EXE	69577.exe
PID 1832 wrote to memory of 560	1832	EQNEDT32.EXE	69577.exe
PID 560 wrote to memory of 1812	560	69577.exe	cmd.exe
PID 560 wrote to memory of 1812	560	69577.exe	cmd.exe
PID 560 wrote to memory of 1812	560	69577.exe	cmd.exe
PID 560 wrote to memory of 1812	560	69577.exe	cmd.exe
PID 1812 wrote to memory of 1008	1812	cmd.exe	taskkill.exe
PID 1812 wrote to memory of 1008	1812	cmd.exe	taskkill.exe
PID 1812 wrote to memory of 1008	1812	cmd.exe	taskkill.exe
PID 1812 wrote to memory of 1008	1812	cmd.exe	taskkill.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\monthly financial statement.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1584

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1168

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1832

C:\Users\Public\69577.exe
"C:\Users\Public\69577.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:560

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im 69577.exe /f & erase C:\Users\Public\69577.exe & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1812

C:\Windows\SysWOW64\taskkill.exe
taskkill /im 69577.exe /f
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

Web Service

Credential Access

Credentials in Files

4

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Public\69577.exe
MD5
14c352be7111714a07714ab82bfd1b70

SHA1
3db41efadf56deafeff3ac541ea68c0046843e47

SHA256
1b7bc78836c832c48b86f5c5406741018af99062461b8f4f2f9e55c8fcc076fc

SHA512
45e15889a6d44891755aaa7de5abced9ea1cd5fdb91d2e284430c65647e136ca5a3b246b7a9ff14fbaf0a2d857e625fa359faeaeefed72e62b04c246214ab4ec

Download Submit
C:\Users\Public\69577.exe
MD5
14c352be7111714a07714ab82bfd1b70

SHA1
3db41efadf56deafeff3ac541ea68c0046843e47

SHA256
1b7bc78836c832c48b86f5c5406741018af99062461b8f4f2f9e55c8fcc076fc

SHA512
45e15889a6d44891755aaa7de5abced9ea1cd5fdb91d2e284430c65647e136ca5a3b246b7a9ff14fbaf0a2d857e625fa359faeaeefed72e62b04c246214ab4ec

Download Submit
\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\msvcp140.dll
MD5
109f0f02fd37c84bfc7508d4227d7ed5

SHA1
ef7420141bb15ac334d3964082361a460bfdb975

SHA256
334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

SHA512
46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

Download Submit
\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\ProgramData\vcruntime140.dll
MD5
7587bf9cb4147022cd5681b015183046

SHA1
f2106306a8f6f0da5afb7fc765cfa0757ad5a628

SHA256
c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

SHA512
0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

Download Submit
\Users\Public\69577.exe
MD5
14c352be7111714a07714ab82bfd1b70

SHA1
3db41efadf56deafeff3ac541ea68c0046843e47

SHA256
1b7bc78836c832c48b86f5c5406741018af99062461b8f4f2f9e55c8fcc076fc

SHA512
45e15889a6d44891755aaa7de5abced9ea1cd5fdb91d2e284430c65647e136ca5a3b246b7a9ff14fbaf0a2d857e625fa359faeaeefed72e62b04c246214ab4ec

Download Submit
\Users\Public\69577.exe
MD5
14c352be7111714a07714ab82bfd1b70

SHA1
3db41efadf56deafeff3ac541ea68c0046843e47

SHA256
1b7bc78836c832c48b86f5c5406741018af99062461b8f4f2f9e55c8fcc076fc

SHA512
45e15889a6d44891755aaa7de5abced9ea1cd5fdb91d2e284430c65647e136ca5a3b246b7a9ff14fbaf0a2d857e625fa359faeaeefed72e62b04c246214ab4ec

Download Submit
memory/560-6-0x0000000000000000-mapping.dmp

Download
memory/560-9-0x00000000049D0000-0x00000000049E1000-memory.dmp

Filesize
68KB

Download
memory/560-8-0x00000000046F9000-0x00000000046FA000-memory.dmp

Filesize
4KB

Download
memory/1008-15-0x0000000000000000-mapping.dmp

Download
memory/1168-2-0x0000000000000000-mapping.dmp

Download
memory/1772-3-0x000007FEF68D0000-0x000007FEF6B4A000-memory.dmp

Filesize
2.5MB

Download
memory/1812-14-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads