xpertrat | c830683f700f311fe3d533d849cf045b1cbed5ff76debaa6c3dd8f71c0daa535

Resubmissions

30-09-2021 08:52

210930-ks4xqahbdl 10

30-09-2021 08:44

210930-km65wshac3 10

Analysis

max time kernel
148s
max time network
200s
platform
windows7_x64
resource
win7v20210408
submitted
30-09-2021 08:52

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General

Target

EXCEL.exe
Size

503KB
MD5

cb12b24b0f69225693168e9c35761a1b
SHA1

0f68f676d76e3546d7d625cdb14f0947c59beff5
SHA256

c830683f700f311fe3d533d849cf045b1cbed5ff76debaa6c3dd8f71c0daa535
SHA512

9d53b958b83d8599d0eb1ee4766f03a735cd557290921ded296513e34fd2886ff78382e9a1616613c566d0be9cd5c381fa4de6b86a921d0a33aac1c499d00c65

Score

10^/10

xpertrat test evasion persistence rat trojan

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

Test

kapasky-antivirus.firewall-gateway.net:4000

Mutex

L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0

Signatures

UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

XpertRAT Core Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1620-129-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral1/memory/1620-130-0x0000000000401364-mapping.dmp	xpertrat

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

1688 notepad.exe
Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

EXCEL.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0" EXCEL.exe

pid	process
1688	notepad.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	EXCEL.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

EXCEL.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" EXCEL.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	EXCEL.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

EXCEL.exeEXCEL.exe

description	pid	process	target process
PID 1636 set thread context of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1872 set thread context of 1620	1872	EXCEL.exe	iexplore.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exepowershell.exeEXCEL.exeEXCEL.exe

pid	process
1548	powershell.exe
1548	powershell.exe
1068	powershell.exe
1068	powershell.exe
1636	EXCEL.exe
1636	EXCEL.exe
1872	EXCEL.exe
1872	EXCEL.exe
1872	EXCEL.exe
1872	EXCEL.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

EXCEL.exepowershell.exepowershell.exeiexplore.exe

description	pid	process
Token: SeDebugPrivilege	1636	EXCEL.exe
Token: SeDebugPrivilege	1548	powershell.exe
Token: SeDebugPrivilege	1068	powershell.exe
Token: SeDebugPrivilege	1620	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

EXCEL.exeiexplore.exe

pid process

1872 EXCEL.exe
1620 iexplore.exe

pid	process
1872	EXCEL.exe
1620	iexplore.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

EXCEL.exeEXCEL.exeiexplore.exe

description	pid	process	target process
PID 1636 wrote to memory of 1548	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1548	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1548	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1548	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1068	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1068	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1068	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1068	1636	EXCEL.exe	powershell.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1636 wrote to memory of 1872	1636	EXCEL.exe	EXCEL.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1872 wrote to memory of 1620	1872	EXCEL.exe	iexplore.exe
PID 1620 wrote to memory of 1688	1620	iexplore.exe	notepad.exe
PID 1620 wrote to memory of 1688	1620	iexplore.exe	notepad.exe
PID 1620 wrote to memory of 1688	1620	iexplore.exe	notepad.exe
PID 1620 wrote to memory of 1688	1620	iexplore.exe	notepad.exe
PID 1620 wrote to memory of 1688	1620	iexplore.exe	notepad.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

EXCEL.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" EXCEL.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	EXCEL.exe

C:\Users\Admin\AppData\Local\Temp\EXCEL.exe
"C:\Users\Admin\AppData\Local\Temp\EXCEL.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-NetConnection -TraceRoute twitch.com
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1548
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Sleep -s 5
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1068
- C:\Users\Admin\AppData\Local\Temp\EXCEL.exe
  C:\Users\Admin\AppData\Local\Temp\EXCEL.exe
  2⤵
  - Windows security modification
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:1872
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    C:\Users\Admin\AppData\Local\Temp\EXCEL.exe
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1620
  - - C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      4⤵
      Deletes itself
      PID:1688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_10a2719f-ab19-452c-9537-375fecbe5f96

MD5
df44874327d79bd75e4264cb8dc01811

SHA1
1396b06debed65ea93c24998d244edebd3c0209d

SHA256
55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

SHA512
95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1abda922-9e0e-4200-89d0-60796083afcc

MD5
be4d72095faf84233ac17b94744f7084

SHA1
cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

SHA256
b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

SHA512
43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_32b21970-4839-4ac5-a2ad-cc925aecc47c

MD5
a725bb9fafcf91f3c6b7861a2bde6db2

SHA1
8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

SHA256
51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

SHA512
1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_60554f64-a36e-4439-8748-76f202d7cb75

MD5
02ff38ac870de39782aeee04d7b48231

SHA1
0390d39fa216c9b0ecdb38238304e518fb2b5095

SHA256
fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

SHA512
24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6ccb18ff-7a22-469e-90e7-ccc861e1432b

MD5
b6d38f250ccc9003dd70efd3b778117f

SHA1
d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

SHA256
4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

SHA512
67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7bc5ca8a-50eb-4a28-856a-31595e01418a

MD5
597009ea0430a463753e0f5b1d1a249e

SHA1
4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

SHA256
3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

SHA512
5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_bd47eb21-a96b-4ccd-99d7-0d9f3f6c10b6

MD5
75a8da7754349b38d64c87c938545b1b

SHA1
5c28c257d51f1c1587e29164cc03ea880c21b417

SHA256
bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

SHA512
798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c9b427a0-6073-4eb8-9b09-f8e4712d7ab5

MD5
5e3c7184a75d42dda1a83606a45001d8

SHA1
94ca15637721d88f30eb4b6220b805c5be0360ed

SHA256
8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

SHA512
fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

MD5
e4b816f968f28b6fd86d2f1ac41c72ff

SHA1
bf747aa6e87e204e4d85fc6269828a1df443415f

SHA256
f075ca9f95db4e6f4dc774678dc9537db18113c99a9f69e224528cbf2cde2019

SHA512
7d001d2746f6e06bb4f62062031deca6442b5b90e3dd7fbc2e5ef30e1ba9c812920498e99ec005f9792085b95201ff32fdaab535eb89591d58f4788facf622fb

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

MD5
4e409e3bfd554c743122358f77f903f3

SHA1
1b6b231f08d12c0087d17cea5a3a4d93635bc6a2

SHA256
f10b5f083fd3d74485070907e814aff7fd9512c6833a24837881633cea0b854b

SHA512
f944204349b32e8631ef96a6c9bc7dc802795d7418c55294881804fdbc2336d75da496a5db050bb3aca90ae5b2fd96fdb856d16542ec99c856c809fc825bdfdc

Download Submit
memory/1068-109-0x00000000025D0000-0x00000000025D1000-memory.dmp

Filesize
4KB

Download
memory/1068-104-0x0000000000000000-mapping.dmp

Download
memory/1068-122-0x00000000056F0000-0x00000000056F1000-memory.dmp

Filesize
4KB

Download
memory/1068-112-0x0000000004920000-0x0000000004921000-memory.dmp

Filesize
4KB

Download
memory/1068-111-0x0000000004AB2000-0x0000000004AB3000-memory.dmp

Filesize
4KB

Download
memory/1068-110-0x0000000004AB0000-0x0000000004AB1000-memory.dmp

Filesize
4KB

Download
memory/1068-108-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

Filesize
4KB

Download
memory/1068-107-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

Filesize
4KB

Download
memory/1548-73-0x0000000005650000-0x0000000005651000-memory.dmp

Filesize
4KB

Download
memory/1548-65-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/1548-103-0x0000000006310000-0x0000000006311000-memory.dmp

Filesize
4KB

Download
memory/1548-102-0x0000000006300000-0x0000000006301000-memory.dmp

Filesize
4KB

Download
memory/1548-79-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1548-88-0x0000000005610000-0x0000000005611000-memory.dmp

Filesize
4KB

Download
memory/1548-87-0x0000000006240000-0x0000000006241000-memory.dmp

Filesize
4KB

Download
memory/1548-80-0x00000000060A0000-0x00000000060A1000-memory.dmp

Filesize
4KB

Download
memory/1548-70-0x00000000052E0000-0x00000000052E1000-memory.dmp

Filesize
4KB

Download
memory/1548-69-0x0000000004710000-0x0000000004711000-memory.dmp

Filesize
4KB

Download
memory/1548-67-0x0000000004960000-0x0000000004961000-memory.dmp

Filesize
4KB

Download
memory/1548-68-0x0000000004962000-0x0000000004963000-memory.dmp

Filesize
4KB

Download
memory/1548-66-0x00000000049A0000-0x00000000049A1000-memory.dmp

Filesize
4KB

Download
memory/1548-78-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/1548-62-0x0000000000000000-mapping.dmp

Download
memory/1620-129-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1620-130-0x0000000000401364-mapping.dmp

Download
memory/1620-131-0x0000000000830000-0x0000000000983000-memory.dmp

Filesize
1.3MB

Download
memory/1636-64-0x0000000004A80000-0x0000000004A81000-memory.dmp

Filesize
4KB

Download
memory/1636-61-0x0000000075C31000-0x0000000075C33000-memory.dmp

Filesize
8KB

Download
memory/1636-59-0x00000000011F0000-0x00000000011F1000-memory.dmp

Filesize
4KB

Download
memory/1636-123-0x0000000001160000-0x00000000011AF000-memory.dmp

Filesize
316KB

Download
memory/1636-124-0x0000000000720000-0x0000000000750000-memory.dmp

Filesize
192KB

Download
memory/1688-134-0x0000000000000000-mapping.dmp

Download
memory/1872-125-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1872-126-0x00000000004010B8-mapping.dmp

Download