b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9

General

Target

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe
Size

2.6MB
MD5

0dc555d4301c1c53ec92326e3f8a8d57
SHA1

1b3d5e36dda0e2417f4d0cadd3955c5343154041
SHA256

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9
SHA512

9e8ce3992d924715e955fb455c5ad1c455c5d21982f806b9db24833cdc76a0e563bf5bda7b4192a342283eafb0bd8a5f92a3a5602d5d7f8aa95e2010c66f9491

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Blocklisted process makes network request 1 IoCs

Processes:

WScript.exe

flow pid process

41 3752 WScript.exe

flow	pid	process
41	3752	WScript.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3904-130-0x0000000000D10000-0x00000000013D4000-memory.dmp	themida
behavioral2/memory/3904-131-0x0000000000D10000-0x00000000013D4000-memory.dmp	themida
behavioral2/memory/3904-132-0x0000000000D10000-0x00000000013D4000-memory.dmp	themida
behavioral2/memory/3904-133-0x0000000000D10000-0x00000000013D4000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

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

19 ip-api.com
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

pid process

3904 b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

flow	ioc
19	ip-api.com

Drops file in Windows directory 8 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe

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

System Information Discovery
T1082

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:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

Modifies registry class 1 IoCs

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

pid	process
3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe
3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

svchost.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	4256	svchost.exe
Token: SeCreatePagefilePrivilege	4256	svchost.exe
Token: SeShutdownPrivilege	4256	svchost.exe
Token: SeCreatePagefilePrivilege	4256	svchost.exe
Token: SeShutdownPrivilege	4256	svchost.exe
Token: SeCreatePagefilePrivilege	4256	svchost.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe
Token: SeRestorePrivilege	3696	TiWorker.exe
Token: SeSecurityPrivilege	3696	TiWorker.exe
Token: SeBackupPrivilege	3696	TiWorker.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe

description	pid	process	target process
PID 3904 wrote to memory of 4372	3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe	WScript.exe
PID 3904 wrote to memory of 4372	3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe	WScript.exe
PID 3904 wrote to memory of 4372	3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe	WScript.exe
PID 3904 wrote to memory of 3752	3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe	WScript.exe
PID 3904 wrote to memory of 3752	3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe	WScript.exe
PID 3904 wrote to memory of 3752	3904	b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe
"C:\Users\Admin\AppData\Local\Temp\b4c2a3b83c21343b81fcecfe1c828126017faed52fb990a4531ba04ad92dddb9.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3904

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\gevchnw.vbs"
2⤵
PID:4372

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\aivgygb.vbs"
2⤵
- Blocklisted process makes network request
PID:3752

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4256

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3696

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

5

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
MD5
54e9306f95f32e50ccd58af19753d929

SHA1
eab9457321f34d4dcf7d4a0ac83edc9131bf7c57

SHA256
45f94dceb18a8f738a26da09ce4558995a4fe02b971882e8116fc9b59813bb72

SHA512
8711a4d866f21cdf4d4e6131ec4cfaf6821d0d22b90946be8b5a09ab868af0270a89bc326f03b858f0361a83c11a1531b894dfd1945e4812ba429a7558791f4f

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
MD5
e36688eb01308748eb016ee6913e3abb

SHA1
49500bb0626becd2b88e5e266edc6b15393ed035

SHA256
55975d04cd50389d15fa7b67ab352f5b2d6d42abb62b774e459194a4542b931e

SHA512
5ef690f088d458e0b2216d5bf87043b190a49b1cedd38a12d29cdeaaf1e23023c76513e5712124f2a68b9a879b8684e00db8719e5a13d158fa09b801f3ad9746

Download Submit
C:\Users\Admin\AppData\Local\Temp\aivgygb.vbs
MD5
67c709d4bfb4dab0f105041197dc0696

SHA1
56fa00790a17a86242530e6de6eaa1da68a1417c

SHA256
30cc5320b5a7f1bc65bf5e0aa163490405423ab468c64523478e2a1793b09005

SHA512
de7198b2fb6bf0e5584c6028af6653d0a832c3bde95f8b635b259be94839ab75e152e4ad964d8d6acd9267bcf954090f6e2bb7084103ac0e7f7f1319de054e37

Download Submit
C:\Users\Admin\AppData\Local\Temp\gevchnw.vbs
MD5
9de06630a75a8c4a2aa32338d79208ca

SHA1
d900088cda875f230e452ec6d65d88b75d05b105

SHA256
2ad6c517c29a3c656b064d7f7e6e82fb7a79d95f0532afc44407474e5bb2dbef

SHA512
e368e1ebff046ba3e88627a3ca5b9caab6b41bdacf793b8aa30860ad28ec53306d1e303d0b8605b37b9b3be051d213d4a35949d3fc7fda8d4cfef306ed84cd82

Download Submit
memory/3904-130-0x0000000000D10000-0x00000000013D4000-memory.dmp

Filesize
6.8MB

Download
memory/3904-131-0x0000000000D10000-0x00000000013D4000-memory.dmp

Filesize
6.8MB

Download
memory/3904-132-0x0000000000D10000-0x00000000013D4000-memory.dmp

Filesize
6.8MB

Download
memory/3904-133-0x0000000000D10000-0x00000000013D4000-memory.dmp

Filesize
6.8MB

Download
memory/3904-134-0x0000000077284000-0x0000000077286000-memory.dmp

Filesize
8KB

Download
memory/4256-136-0x000001E9B7170000-0x000001E9B7180000-memory.dmp

Filesize
64KB

Download
memory/4256-137-0x000001E9B7720000-0x000001E9B7730000-memory.dmp

Filesize
64KB

Download
memory/4256-138-0x000001E9B9DF0000-0x000001E9B9DF4000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads