vidar | cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f

Analysis

max time kernel
80s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
25-06-2022 05:14

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General

Target

cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
Size

4.2MB
MD5

833eba537bf83840ae1c14c010f16395
SHA1

d4026438d84ff06c6cec70f3849c966e23abf29a
SHA256

cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f
SHA512

272470343eb2387a8da993c16ce3d7c8647e829ca0c8d15263912a51d957d4c1d123e5e65744824696b8e2d54671abfcfcc1267adb32018f522ba00ad15a1b70

Score

10^/10

vidar 231 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

10.1

Botnet

231

http://tribecaflatstore.com/

Attributes

profile_id
231

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata

Vidar Stealer 3 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/4452-141-0x0000000000400000-0x0000000000CB2000-memory.dmp	family_vidar
behavioral2/memory/4452-157-0x00000000011F0000-0x00000000012F0000-memory.dmp	family_vidar
behavioral2/memory/4452-158-0x0000000000400000-0x0000000000CB2000-memory.dmp	family_vidar

Executes dropped EXE 4 IoCs

Processes:

busshost.exeYTLoader.execonf.exeattachmentphoto.exe

pid process

4452 busshost.exe
1340 YTLoader.exe
4188 conf.exe
4648 attachmentphoto.exe

pid	process
4452	busshost.exe
1340	YTLoader.exe
4188	conf.exe
4648	attachmentphoto.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.execonf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	conf.exe

Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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 stealer

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 stealer

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
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
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

32 ip-api.com

flow	ioc
32	ip-api.com

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/4188-154-0x0000000000400000-0x00000000005F6000-memory.dmp	autoit_exe
behavioral2/memory/4188-159-0x0000000000400000-0x00000000005F6000-memory.dmp	autoit_exe
behavioral2/memory/4648-165-0x0000000000400000-0x00000000005F6000-memory.dmp	autoit_exe
behavioral2/memory/4648-168-0x0000000000400000-0x00000000005F6000-memory.dmp	autoit_exe

Drops file in Program Files directory 5 IoCs

Processes:

cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\conf.exe	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1532 4188 WerFault.exe conf.exe
3140 1340 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1532	4188	WerFault.exe	conf.exe
3140	1340	WerFault.exe	YTLoader.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

busshost.exeYTLoader.exe

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

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2648 schtasks.exe
1720 schtasks.exe

pid	process
2648	schtasks.exe
1720	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

YTLoader.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	YTLoader.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	YTLoader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	YTLoader.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4224 PING.EXE
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

busshost.exe

pid process

4452 busshost.exe
4452 busshost.exe
4452 busshost.exe
4452 busshost.exe
4452 busshost.exe
4452 busshost.exe
4452 busshost.exe
4452 busshost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 1340 YTLoader.exe

pid	process
4224	PING.EXE

pid	process
4452	busshost.exe
4452	busshost.exe
4452	busshost.exe
4452	busshost.exe
4452	busshost.exe
4452	busshost.exe
4452	busshost.exe
4452	busshost.exe

description	pid	process
Token: SeDebugPrivilege	1340	YTLoader.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.execonf.execmd.exe

description	pid	process	target process
PID 876 wrote to memory of 4452	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	busshost.exe
PID 876 wrote to memory of 4452	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	busshost.exe
PID 876 wrote to memory of 4452	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	busshost.exe
PID 876 wrote to memory of 1340	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	YTLoader.exe
PID 876 wrote to memory of 1340	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	YTLoader.exe
PID 876 wrote to memory of 1340	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	YTLoader.exe
PID 876 wrote to memory of 4188	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	conf.exe
PID 876 wrote to memory of 4188	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	conf.exe
PID 876 wrote to memory of 4188	876	cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe	conf.exe
PID 4188 wrote to memory of 4648	4188	conf.exe	attachmentphoto.exe
PID 4188 wrote to memory of 4648	4188	conf.exe	attachmentphoto.exe
PID 4188 wrote to memory of 4648	4188	conf.exe	attachmentphoto.exe
PID 4188 wrote to memory of 2408	4188	conf.exe	cmd.exe
PID 4188 wrote to memory of 2408	4188	conf.exe	cmd.exe
PID 4188 wrote to memory of 2408	4188	conf.exe	cmd.exe
PID 2408 wrote to memory of 4224	2408	cmd.exe	PING.EXE
PID 2408 wrote to memory of 4224	2408	cmd.exe	PING.EXE
PID 2408 wrote to memory of 4224	2408	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe
"C:\Users\Admin\AppData\Local\Temp\cae7e501a803e88ac321df0fc93ce4ba36785d1c90f4075a287c84511ca7418f.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:876

C:\Program Files (x86)\LetsSee!\busshost.exe
"C:\Program Files (x86)\LetsSee!\busshost.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4452

C:\Program Files (x86)\LetsSee!\YTLoader.exe
"C:\Program Files (x86)\LetsSee!\YTLoader.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:1340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1340 -s 1608
3⤵
- Program crash
PID:3140

C:\Program Files (x86)\LetsSee!\conf.exe
"C:\Program Files (x86)\LetsSee!\conf.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4188

C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
3⤵
- Executes dropped EXE
PID:4648

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c SchTasks /create /SC MINUTE /TN 7ZipUnis /TR C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\volumfix.exe
4⤵
PID:2144

C:\Windows\SysWOW64\schtasks.exe
SchTasks /create /SC MINUTE /TN 7ZipUnis /TR C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\volumfix.exe
5⤵
- Creates scheduled task(s)
PID:1720

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c SchTasks /create /SC HOURLY /TN FlashServis /TR C:\ProgramData\FlashSys\CurlMSI.exe
4⤵
PID:4384

C:\Windows\SysWOW64\schtasks.exe
SchTasks /create /SC HOURLY /TN FlashServis /TR C:\ProgramData\FlashSys\CurlMSI.exe
5⤵
- Creates scheduled task(s)
PID:2648

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k ping -n 2 localhost < nul & del /F /Q "C:\Program Files (x86)\LetsSee!\conf.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:2408

C:\Windows\SysWOW64\PING.EXE
ping -n 2 localhost
4⤵
- Runs ping.exe
PID:4224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 732
3⤵
- Program crash
PID:1532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4188 -ip 4188
1⤵
PID:2512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1340 -ip 1340
1⤵
PID:3988

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Remote System Discovery

T1018

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
C:\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
C:\Program Files (x86)\LetsSee!\busshost.exe
Filesize
689KB

MD5
f06aed80e8fcd1a0c75cc828bf2cf453

SHA1
97f0914c775b23d2b1aaf67537b41af54e678bf1

SHA256
b9de5501dbcd52a66c3348820fa377988ba5dcc48782bb4a30a7bf75a2a02c8e

SHA512
ef4e3735f46754c01666ae624c45d519fae77d7a75981e9db87c5d9bda840903e63ae19137ef1752b253145f925ad720e6eb8fabc11c2a4f56ccfb8d9f23f3ef

Download Submit
C:\Program Files (x86)\LetsSee!\busshost.exe
Filesize
689KB

MD5
f06aed80e8fcd1a0c75cc828bf2cf453

SHA1
97f0914c775b23d2b1aaf67537b41af54e678bf1

SHA256
b9de5501dbcd52a66c3348820fa377988ba5dcc48782bb4a30a7bf75a2a02c8e

SHA512
ef4e3735f46754c01666ae624c45d519fae77d7a75981e9db87c5d9bda840903e63ae19137ef1752b253145f925ad720e6eb8fabc11c2a4f56ccfb8d9f23f3ef

Download Submit
C:\Program Files (x86)\LetsSee!\conf.exe
Filesize
994KB

MD5
264dc0362c00dd8ede487ddc5f2a32b7

SHA1
180ec62de0d43e56d765840a0e00dc9318ecd33b

SHA256
cbf1591403089197cec80e6eb05906e6bd848aa9d0d5ba21a43c6bb6c40bff19

SHA512
b704f389dbe7858340f536ea3e8508627328bb29939e0e0a3f8b46b845cd82248f1bc41c746cfdb03d40799752bb36552d9aedc08684e9a7a0fe12696a368844

Download Submit
C:\Program Files (x86)\LetsSee!\conf.exe
Filesize
994KB

MD5
264dc0362c00dd8ede487ddc5f2a32b7

SHA1
180ec62de0d43e56d765840a0e00dc9318ecd33b

SHA256
cbf1591403089197cec80e6eb05906e6bd848aa9d0d5ba21a43c6bb6c40bff19

SHA512
b704f389dbe7858340f536ea3e8508627328bb29939e0e0a3f8b46b845cd82248f1bc41c746cfdb03d40799752bb36552d9aedc08684e9a7a0fe12696a368844

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\win.ini
Filesize
199B

MD5
3d68da5fd157231843a13667676de3f2

SHA1
206082eb56a40f38ba1e852ffcde4cd6e23cc338

SHA256
f5c9d294b9c805e38bebe17ac7150bf591df5b28f28db56dc2a1a9e609331759

SHA512
e136ed0cc3f47c52b439d72d39fcde3724852ec106e145c5e0dbb6d4d6e69209da7d160e3cc7c7ad51370230ffd4403477a65cd334cf71965473b847db0584a5

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
Filesize
994KB

MD5
264dc0362c00dd8ede487ddc5f2a32b7

SHA1
180ec62de0d43e56d765840a0e00dc9318ecd33b

SHA256
cbf1591403089197cec80e6eb05906e6bd848aa9d0d5ba21a43c6bb6c40bff19

SHA512
b704f389dbe7858340f536ea3e8508627328bb29939e0e0a3f8b46b845cd82248f1bc41c746cfdb03d40799752bb36552d9aedc08684e9a7a0fe12696a368844

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
Filesize
994KB

MD5
264dc0362c00dd8ede487ddc5f2a32b7

SHA1
180ec62de0d43e56d765840a0e00dc9318ecd33b

SHA256
cbf1591403089197cec80e6eb05906e6bd848aa9d0d5ba21a43c6bb6c40bff19

SHA512
b704f389dbe7858340f536ea3e8508627328bb29939e0e0a3f8b46b845cd82248f1bc41c746cfdb03d40799752bb36552d9aedc08684e9a7a0fe12696a368844

Download Submit
memory/1340-149-0x0000000005EA0000-0x0000000005EA8000-memory.dmp

Filesize
32KB

Download
memory/1340-133-0x0000000000000000-mapping.dmp

Download
memory/1340-142-0x0000000005710000-0x000000000571A000-memory.dmp

Filesize
40KB

Download
memory/1340-143-0x0000000005720000-0x0000000005728000-memory.dmp

Filesize
32KB

Download
memory/1340-144-0x0000000005740000-0x0000000005748000-memory.dmp

Filesize
32KB

Download
memory/1340-145-0x0000000005E50000-0x0000000005E58000-memory.dmp

Filesize
32KB

Download
memory/1340-146-0x0000000005E60000-0x0000000005E68000-memory.dmp

Filesize
32KB

Download
memory/1340-148-0x0000000005E90000-0x0000000005E98000-memory.dmp

Filesize
32KB

Download
memory/1340-138-0x00000000008E0000-0x0000000000BE8000-memory.dmp

Filesize
3.0MB

Download
memory/1340-147-0x0000000005E80000-0x0000000005E88000-memory.dmp

Filesize
32KB

Download
memory/1720-166-0x0000000000000000-mapping.dmp

Download
memory/2144-162-0x0000000000000000-mapping.dmp

Download
memory/2408-155-0x0000000000000000-mapping.dmp

Download
memory/2648-167-0x0000000000000000-mapping.dmp

Download
memory/4188-153-0x0000000000C09000-0x0000000000C9B000-memory.dmp

Filesize
584KB

Download
memory/4188-154-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/4188-159-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/4188-135-0x0000000000000000-mapping.dmp

Download
memory/4224-156-0x0000000000000000-mapping.dmp

Download
memory/4384-163-0x0000000000000000-mapping.dmp

Download
memory/4452-140-0x00000000011F0000-0x00000000012F0000-memory.dmp

Filesize
1024KB

Download
memory/4452-158-0x0000000000400000-0x0000000000CB2000-memory.dmp

Filesize
8.7MB

Download
memory/4452-157-0x00000000011F0000-0x00000000012F0000-memory.dmp

Filesize
1024KB

Download
memory/4452-141-0x0000000000400000-0x0000000000CB2000-memory.dmp

Filesize
8.7MB

Download
memory/4452-130-0x0000000000000000-mapping.dmp

Download
memory/4648-151-0x0000000000000000-mapping.dmp

Download
memory/4648-164-0x0000000000A6B000-0x0000000000AFD000-memory.dmp

Filesize
584KB

Download
memory/4648-165-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/4648-168-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download