d252b50ee95324217ab4f62d74c0062642799e8be3609165cbaa5e4f8338b769

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 18:29

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General

Target

ByteFence.exe
Size

3.8MB
MD5

b821cd61e2d66b1ca5c795230f6b1b8e
SHA1

a2e0cea3af916f98233ad73992cbac1dea55b234
SHA256

16e0d6966e98794aa18719606e41f4d4ae74683d652e81374717282fc8b3239e
SHA512

6f88f403aadb97612bb409bae098bfba28d863a97c4fdb5a69431732251d7a91d3bc76750d30e30db38df1e7d4cf2f633c2b5a09cfef08437d5d1a6cfd55ebd7
SSDEEP

98304:YXrXAQnL22v90UxMwbV1J29H0SF8A9q4er:YTL2mewhn2ddrur

Score

7^/10

evasion spyware stealer trojan

Malware Config

Signatures

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
T1552.001

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\f:	ByteFence.exe

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

System Information Discovery
T1082

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	ByteFenceService.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\ByteFence Folder Scan\ = "Scan with ByteFence Anti-Malware..."	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\ByteFence Folder Scan\Icon = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ByteFence.exe\",0"	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\ByteFence Folder Scan\Position = "Middle"	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\ByteFence Folder Scan\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ByteFenceScan.exe\" /scan:\"%1\""	ByteFence.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\ByteFence File Scan	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\ByteFence File Scan\Position = "Middle"	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\ByteFence File Scan\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ByteFenceScan.exe\" /scan:\"%1\""	ByteFence.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\ByteFence Folder Scan	ByteFence.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shell\ByteFence Folder Scan\command	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\ByteFence File Scan\ = "Scan with ByteFence Anti-Malware..."	ByteFence.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\ByteFence File Scan\Icon = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ByteFence.exe\",0"	ByteFence.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\ByteFence File Scan\command	ByteFence.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
4304	ByteFence.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe
2356	ByteFenceService.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	4304	ByteFence.exe
Token: SeDebugPrivilege	4936	ByteFenceService.exe
Token: SeDebugPrivilege	2356	ByteFenceService.exe
Token: SeDebugPrivilege	2356	ByteFenceService.exe
Token: SeDebugPrivilege	2356	ByteFenceService.exe
Token: SeBackupPrivilege	2356	ByteFenceService.exe
Token: SeRestorePrivilege	2356	ByteFenceService.exe
Token: SeLoadDriverPrivilege	2356	ByteFenceService.exe
Token: SeDebugPrivilege	4304	ByteFence.exe
Token: SeDebugPrivilege	4304	ByteFence.exe
Token: SeBackupPrivilege	4304	ByteFence.exe
Token: SeRestorePrivilege	4304	ByteFence.exe
Token: SeLoadDriverPrivilege	4304	ByteFence.exe
Token: SeBackupPrivilege	5100	dw20.exe
Token: SeBackupPrivilege	5100	dw20.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 4936	4304	ByteFence.exe	86
PID 4304 wrote to memory of 4936	4304	ByteFence.exe	86
PID 4304 wrote to memory of 5100	4304	ByteFence.exe	94
PID 4304 wrote to memory of 5100	4304	ByteFence.exe	94

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\ByteFence.exe
"C:\Users\Admin\AppData\Local\Temp\ByteFence.exe"
1⤵
- Checks whether UAC is enabled
- Enumerates connected drives
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4304
- \??\c:\users\admin\appdata\local\temp\ByteFenceService.exe
  "c:\users\admin\appdata\local\temp\ByteFenceService.exe" /i
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4936
- C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
  dw20.exe -x -s 2284
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:5100

\??\c:\users\admin\appdata\local\temp\ByteFenceService.exe
"c:\users\admin\appdata\local\temp\ByteFenceService.exe"
1⤵
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ByteFenceService.InstallLog

Filesize
278B

MD5
6eaa1926a6ef20c0742b1344bf1d8a14

SHA1
a9ba7268b609d64e0434d9a8f3f78d2371a2ac1d

SHA256
119aacf78c0083c15adc496df961bb78fe33efac6d3f41227d903f6c63b3ee28

SHA512
f4fef01bcded694a182440501f7a0dd47d6441e2558f1df26d019697a2f9372fd0f0e6ba8e1bb2b30b4fe34f53eefbc439e7ead6f1d726fd465543c9fccc9889

Download Submit
C:\Users\Admin\AppData\Local\Temp\ByteFenceService.InstallLog

Filesize
717B

MD5
69b661f1c5111bab508264cdc91e33ef

SHA1
d2b443a7aa799e0bd48124e6583ed92b591ffc3d

SHA256
2d60399359ec8f2906cac7f836a0f10162c961b89eae1e849073acbbb6d3d84d

SHA512
cf132dc26464264d2c6ec093efc7aa0b64afdbb9ad0e2f1ce0faf8f54447f0588627677de33a67e30a12110aea3d1103be7e4d00fc8dc30cf85b314a73b63c07

Download Submit
\??\c:\users\admin\appdata\local\temp\Errors.dat

Filesize
3KB

MD5
1afccef54cc6edf48ac5d5c977354907

SHA1
a76964c4cf3587da329f780bf44fd549be186c8b

SHA256
3c97478e4cf684ab61f201ffe8ac76900a74c1d10607723b51697274eb141ce2

SHA512
785b5d06d1bcb2805e0bb98e180398aded2b90d2a9a76aef80a4e1b67ef2208639620db0b85d230e6eeac9e5ff5760905de16c58ac28e349779595fdf3d4da84

Download Submit
\??\c:\users\admin\appdata\local\temp\Logs\err.dat

Filesize
5KB

MD5
eaaab72801fa8dde5afd048a709edf07

SHA1
be43becfc3841053e4546e2f69af4e3ec500f149

SHA256
969419a1ceeef5722f0cfcfbedf7ca021d1e2cbc2c31a605b7be8aae585e2624

SHA512
51ce14157bdfacd79e848c547a4145d30144257ac201209be8a6ddbc644f00f145faa15f475025a53f4d0a3543d88006047a87c7cb1f9f770a31727e0045e6e4

Download Submit
\??\c:\users\admin\appdata\local\temp\rsEngine.config

Filesize
344B

MD5
56471e1d552cf365892a221059747376

SHA1
89cb5955b2ea777edd6366c5139029946310bafd

SHA256
d71574e62332c8ba76faf56f14de7357b6b2eba1d6c2e41dd140170a7b729d50

SHA512
a5be82b7a7940a60e5febf5458237fcfa4b1a06188604529089b711b802c0fee7bad700a368830737e78d0c32431cc8baa13cb65f1c320cf14943be7d8e46972

Download Submit
memory/2356-107-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/2356-55-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/2356-51-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/2356-48-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/2356-47-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-13-0x000000001C7D0000-0x000000001C7F0000-memory.dmp

Filesize
128KB

Download
memory/4304-4-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-1-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-2-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-3-0x000000001D170000-0x000000001D6C4000-memory.dmp

Filesize
5.3MB

Download
memory/4304-106-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-93-0x0000000023720000-0x0000000023856000-memory.dmp

Filesize
1.2MB

Download
memory/4304-91-0x00000000253D0000-0x0000000025414000-memory.dmp

Filesize
272KB

Download
memory/4304-92-0x00000000256F0000-0x0000000025726000-memory.dmp

Filesize
216KB

Download
memory/4304-11-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-9-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-90-0x000000001F9E0000-0x000000001FA20000-memory.dmp

Filesize
256KB

Download
memory/4304-8-0x000000001C540000-0x000000001C57C000-memory.dmp

Filesize
240KB

Download
memory/4304-7-0x000000001C4A0000-0x000000001C53C000-memory.dmp

Filesize
624KB

Download
memory/4304-49-0x00007FFCB5B55000-0x00007FFCB5B56000-memory.dmp

Filesize
4KB

Download
memory/4304-50-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-6-0x000000001EA20000-0x000000001EEEE000-memory.dmp

Filesize
4.8MB

Download
memory/4304-5-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-54-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-0-0x00007FFCB5B55000-0x00007FFCB5B56000-memory.dmp

Filesize
4KB

Download
memory/4304-56-0x000000001F970000-0x000000001F9DA000-memory.dmp

Filesize
424KB

Download
memory/4304-59-0x000000001CC90000-0x000000001CCE2000-memory.dmp

Filesize
328KB

Download
memory/4304-60-0x000000001C5A0000-0x000000001C5A8000-memory.dmp

Filesize
32KB

Download
memory/4304-61-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-62-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-63-0x000000001C860000-0x000000001C866000-memory.dmp

Filesize
24KB

Download
memory/4304-64-0x0000000020D70000-0x0000000020EEC000-memory.dmp

Filesize
1.5MB

Download
memory/4304-77-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4304-82-0x0000000020800000-0x0000000020862000-memory.dmp

Filesize
392KB

Download
memory/4936-46-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4936-22-0x000000001C720000-0x000000001C744000-memory.dmp

Filesize
144KB

Download
memory/4936-19-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4936-18-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4936-17-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4936-16-0x000000001BA50000-0x000000001BA68000-memory.dmp

Filesize
96KB

Download
memory/4936-15-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download
memory/4936-14-0x00007FFCB58A0000-0x00007FFCB6241000-memory.dmp

Filesize
9.6MB

Download