41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8

General

Target

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe
Size

2.4MB
MD5

a287d97f20d4608c53d2bc5e9d64b94d
SHA1

b3a444db0d000a7905987dc445ecfee9bb3990fc
SHA256

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8
SHA512

1a2324eaff128cc6d62686b565bb108b6b4aeab12d662d329ffcc327eac812958b48b8e0b6dc07f1fc3f30597775074db14f6ec556b34a6c8d75810281ac4260

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

46 1656 WScript.exe

flow	pid	process
46	1656	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:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.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:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3424-130-0x0000000000B10000-0x000000000117B000-memory.dmp	themida
behavioral2/memory/3424-131-0x0000000000B10000-0x000000000117B000-memory.dmp	themida
behavioral2/memory/3424-132-0x0000000000B10000-0x000000000117B000-memory.dmp	themida
behavioral2/memory/3424-133-0x0000000000B10000-0x000000000117B000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.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

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

Processes:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

pid process

3424 41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

flow	ioc
13	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:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

Modifies registry class 1 IoCs

Processes:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

pid	process
3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe
3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

svchost.exeTiWorker.exe

description	pid	process
Token: SeShutdownPrivilege	4688	svchost.exe
Token: SeCreatePagefilePrivilege	4688	svchost.exe
Token: SeShutdownPrivilege	4688	svchost.exe
Token: SeCreatePagefilePrivilege	4688	svchost.exe
Token: SeShutdownPrivilege	4688	svchost.exe
Token: SeCreatePagefilePrivilege	4688	svchost.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe
Token: SeRestorePrivilege	440	TiWorker.exe
Token: SeSecurityPrivilege	440	TiWorker.exe
Token: SeBackupPrivilege	440	TiWorker.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe

description	pid	process	target process
PID 3424 wrote to memory of 4960	3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe	WScript.exe
PID 3424 wrote to memory of 4960	3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe	WScript.exe
PID 3424 wrote to memory of 4960	3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe	WScript.exe
PID 3424 wrote to memory of 1656	3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe	WScript.exe
PID 3424 wrote to memory of 1656	3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe	WScript.exe
PID 3424 wrote to memory of 1656	3424	41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.exe
"C:\Users\Admin\AppData\Local\Temp\41a98f1b2ee8d81ec81b8cc9433424a8f7f9f9e513f8bcaab7a7ba1c522313d8.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:3424

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\dwunraynyi.vbs"
2⤵
PID:4960

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tsuqabyo.vbs"
2⤵
- Blocklisted process makes network request
PID:1656

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:4688

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:440

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
71f491d8bd984e4ee53a6b1dfd179c30

SHA1
7bb6b17ea8c503803d254ff60dbbe774a248a5c7

SHA256
3ece90b140d93a314cd5709ff6bd16f59d1cec5f967feb0dff361261157ba77c

SHA512
093e46dc2caec8683230707f138a11799438aa6b480b443aa03dfd2233115f13039cb2441e1462649bc332a56cc1127f8d0dd6f3c051b747b0be8622a8d6faa8

Download Submit
C:\Users\Admin\AppData\Local\Temp\dwunraynyi.vbs
MD5
353cf4cd2eaf0aead4ec29ac57264ada

SHA1
8a74cfa984d6e0c466bdd63890c2c9f8c35498eb

SHA256
c8a228606920d9270f837e6aaf1719ee3d9c045af062ebee22010d9d2f138bb1

SHA512
fb8932d4655a449408598b847c0be54220a604fd416987be17eae34918cb60e950d83fce4e3aaa43a00b3da3d196fb6a1e2ba6a6bd04e95ad4b351deba7edf4f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tsuqabyo.vbs
MD5
3bfa1ddb458ea19f77298687c7d775dd

SHA1
36e2bba4cce0447143dfb8960449f5112c269edd

SHA256
d719813a8dcd8eb068dd1260f551ee5d6e7bf70f713288ae5038e18b86db75f2

SHA512
3be9d5cf3467cf58ed45e4255ea7f04482fdf2e17c7e96f00afb95878cb85167e77397bb5bb018058c3c321c67316982781179105d322d7105390e11942de157

Download Submit
memory/3424-130-0x0000000000B10000-0x000000000117B000-memory.dmp

Filesize
6.4MB

Download
memory/3424-131-0x0000000000B10000-0x000000000117B000-memory.dmp

Filesize
6.4MB

Download
memory/3424-132-0x0000000000B10000-0x000000000117B000-memory.dmp

Filesize
6.4MB

Download
memory/3424-133-0x0000000000B10000-0x000000000117B000-memory.dmp

Filesize
6.4MB

Download
memory/3424-134-0x0000000077164000-0x0000000077166000-memory.dmp

Filesize
8KB

Download
memory/4688-135-0x000001C3EF370000-0x000001C3EF380000-memory.dmp

Filesize
64KB

Download
memory/4688-136-0x000001C3EFA20000-0x000001C3EFA30000-memory.dmp

Filesize
64KB

Download
memory/4688-137-0x000001C3F20F0000-0x000001C3F20F4000-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