xpertrat | c830683f700f311fe3d533d849cf045b1cbed5ff76debaa6c3dd8f71c0daa535

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

C2

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
behavioral2/memory/1960-710-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/1960-711-0x0000000000401364-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

1700 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
1700	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-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\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 664 set thread context of 1420	664	EXCEL.exe	EXCEL.exe
PID 1420 set thread context of 1960	1420	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 12 IoCs

Processes:

powershell.exepowershell.exeEXCEL.exeEXCEL.exe

pid	process
1164	powershell.exe
1164	powershell.exe
1164	powershell.exe
716	powershell.exe
716	powershell.exe
716	powershell.exe
664	EXCEL.exe
664	EXCEL.exe
1420	EXCEL.exe
1420	EXCEL.exe
1420	EXCEL.exe
1420	EXCEL.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

EXCEL.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	664	EXCEL.exe
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeIncreaseQuotaPrivilege	1164	powershell.exe
Token: SeSecurityPrivilege	1164	powershell.exe
Token: SeTakeOwnershipPrivilege	1164	powershell.exe
Token: SeLoadDriverPrivilege	1164	powershell.exe
Token: SeSystemProfilePrivilege	1164	powershell.exe
Token: SeSystemtimePrivilege	1164	powershell.exe
Token: SeProfSingleProcessPrivilege	1164	powershell.exe
Token: SeIncBasePriorityPrivilege	1164	powershell.exe
Token: SeCreatePagefilePrivilege	1164	powershell.exe
Token: SeBackupPrivilege	1164	powershell.exe
Token: SeRestorePrivilege	1164	powershell.exe
Token: SeShutdownPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeSystemEnvironmentPrivilege	1164	powershell.exe
Token: SeRemoteShutdownPrivilege	1164	powershell.exe
Token: SeUndockPrivilege	1164	powershell.exe
Token: SeManageVolumePrivilege	1164	powershell.exe
Token: 33	1164	powershell.exe
Token: 34	1164	powershell.exe
Token: 35	1164	powershell.exe
Token: 36	1164	powershell.exe
Token: SeIncreaseQuotaPrivilege	1164	powershell.exe
Token: SeSecurityPrivilege	1164	powershell.exe
Token: SeTakeOwnershipPrivilege	1164	powershell.exe
Token: SeLoadDriverPrivilege	1164	powershell.exe
Token: SeSystemProfilePrivilege	1164	powershell.exe
Token: SeSystemtimePrivilege	1164	powershell.exe
Token: SeProfSingleProcessPrivilege	1164	powershell.exe
Token: SeIncBasePriorityPrivilege	1164	powershell.exe
Token: SeCreatePagefilePrivilege	1164	powershell.exe
Token: SeBackupPrivilege	1164	powershell.exe
Token: SeRestorePrivilege	1164	powershell.exe
Token: SeShutdownPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeSystemEnvironmentPrivilege	1164	powershell.exe
Token: SeRemoteShutdownPrivilege	1164	powershell.exe
Token: SeUndockPrivilege	1164	powershell.exe
Token: SeManageVolumePrivilege	1164	powershell.exe
Token: 33	1164	powershell.exe
Token: 34	1164	powershell.exe
Token: 35	1164	powershell.exe
Token: 36	1164	powershell.exe
Token: SeIncreaseQuotaPrivilege	1164	powershell.exe
Token: SeSecurityPrivilege	1164	powershell.exe
Token: SeTakeOwnershipPrivilege	1164	powershell.exe
Token: SeLoadDriverPrivilege	1164	powershell.exe
Token: SeSystemProfilePrivilege	1164	powershell.exe
Token: SeSystemtimePrivilege	1164	powershell.exe
Token: SeProfSingleProcessPrivilege	1164	powershell.exe
Token: SeIncBasePriorityPrivilege	1164	powershell.exe
Token: SeCreatePagefilePrivilege	1164	powershell.exe
Token: SeBackupPrivilege	1164	powershell.exe
Token: SeRestorePrivilege	1164	powershell.exe
Token: SeShutdownPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeSystemEnvironmentPrivilege	1164	powershell.exe
Token: SeRemoteShutdownPrivilege	1164	powershell.exe
Token: SeUndockPrivilege	1164	powershell.exe
Token: SeManageVolumePrivilege	1164	powershell.exe
Token: 33	1164	powershell.exe
Token: 34	1164	powershell.exe
Token: 35	1164	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

EXCEL.exeiexplore.exe

pid process

1420 EXCEL.exe
1960 iexplore.exe

pid	process
1420	EXCEL.exe
1960	iexplore.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

EXCEL.exeEXCEL.exeiexplore.exe

description	pid	process	target process
PID 664 wrote to memory of 1164	664	EXCEL.exe	powershell.exe
PID 664 wrote to memory of 1164	664	EXCEL.exe	powershell.exe
PID 664 wrote to memory of 1164	664	EXCEL.exe	powershell.exe
PID 664 wrote to memory of 716	664	EXCEL.exe	powershell.exe
PID 664 wrote to memory of 716	664	EXCEL.exe	powershell.exe
PID 664 wrote to memory of 716	664	EXCEL.exe	powershell.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 664 wrote to memory of 1420	664	EXCEL.exe	EXCEL.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1420 wrote to memory of 1960	1420	EXCEL.exe	iexplore.exe
PID 1960 wrote to memory of 1700	1960	iexplore.exe	notepad.exe
PID 1960 wrote to memory of 1700	1960	iexplore.exe	notepad.exe
PID 1960 wrote to memory of 1700	1960	iexplore.exe	notepad.exe
PID 1960 wrote to memory of 1700	1960	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:664

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:1164

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Sleep -s 5
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:716

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:1420

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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\notepad.exe
notepad.exe
4⤵
- Deletes itself
PID:1700

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

3

T1089

Modify Registry

6

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
MD5
26cfaf6b321c86dfc24262e01f03d929

SHA1
7026c2d0182aee991326da0967418a3b72d97970

SHA256
ef42a7bbf10616760366d4baba9976be9b8497f610389b5b8994eea2c498489b

SHA512
fed2081182d4b7d8f679e0e06eea4a4c1292f83c6b4ffaf46f0d199c384efca86da03d69ecd65cdd87c52745979f53eabe6ab19e1251000849c5c67a8038eac7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
MD5
1c33ff599b382b705675229c91fc2f99

SHA1
c20086746c14c5d57be9a3df47bd75fa77abe7e0

SHA256
d46b6790776328125154bb8231deafcc7786911bea48fbcd2742c05fa1c4da0a

SHA512
5b975f6b0d5407d8d43975c0fd0c26ecb155f6ee9b7416e39478f84e97deea590d1eb0cf2a972adcf96eba6745fdef472f6fcf51d85cd53c2da9b4c550ee413c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
MD5
66c63c392d8c9423fc27c3a21623fb5c

SHA1
aa77e0802f753540e1a6d9e7f918f78ba54e8275

SHA256
2cd50ee734d44b5d676d99c92103ab9b0520140f52f1d664177f8fd7446c86b3

SHA512
36ba2c958232a1cc9aef4490287463ed5a5a5c0969be047e2a937104a1c68578aba80d0f046c61dac2e36b00c35dcebc7156ef467a0dff09cf7a2245cfe96d98

Download Submit
memory/664-114-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/664-116-0x0000000005230000-0x0000000005231000-memory.dmp

Filesize
4KB

Download
memory/664-702-0x0000000002BE0000-0x0000000002C10000-memory.dmp

Filesize
192KB

Download
memory/664-701-0x0000000001120000-0x000000000116F000-memory.dmp

Filesize
316KB

Download
memory/716-703-0x0000000007333000-0x0000000007334000-memory.dmp

Filesize
4KB

Download
memory/716-691-0x0000000007332000-0x0000000007333000-memory.dmp

Filesize
4KB

Download
memory/716-690-0x0000000007330000-0x0000000007331000-memory.dmp

Filesize
4KB

Download
memory/716-677-0x0000000000000000-mapping.dmp

Download
memory/1164-128-0x0000000007E30000-0x0000000007E31000-memory.dmp

Filesize
4KB

Download
memory/1164-126-0x0000000007910000-0x0000000007911000-memory.dmp

Filesize
4KB

Download
memory/1164-130-0x0000000008160000-0x0000000008161000-memory.dmp

Filesize
4KB

Download
memory/1164-138-0x0000000008EE0000-0x0000000008F13000-memory.dmp

Filesize
204KB

Download
memory/1164-145-0x0000000008EC0000-0x0000000008EC1000-memory.dmp

Filesize
4KB

Download
memory/1164-150-0x0000000009230000-0x0000000009231000-memory.dmp

Filesize
4KB

Download
memory/1164-151-0x000000007EDD0000-0x000000007EDD1000-memory.dmp

Filesize
4KB

Download
memory/1164-152-0x0000000009450000-0x0000000009451000-memory.dmp

Filesize
4KB

Download
memory/1164-219-0x0000000006A03000-0x0000000006A04000-memory.dmp

Filesize
4KB

Download
memory/1164-381-0x000000000ABA0000-0x000000000ABA1000-memory.dmp

Filesize
4KB

Download
memory/1164-382-0x000000000A540000-0x000000000A541000-memory.dmp

Filesize
4KB

Download
memory/1164-393-0x00000000028D0000-0x00000000028D1000-memory.dmp

Filesize
4KB

Download
memory/1164-469-0x0000000006F40000-0x0000000006F41000-memory.dmp

Filesize
4KB

Download
memory/1164-552-0x0000000006F70000-0x0000000006F71000-memory.dmp

Filesize
4KB

Download
memory/1164-570-0x0000000002930000-0x0000000002931000-memory.dmp

Filesize
4KB

Download
memory/1164-572-0x0000000006A06000-0x0000000006A08000-memory.dmp

Filesize
8KB

Download
memory/1164-127-0x0000000007A80000-0x0000000007A81000-memory.dmp

Filesize
4KB

Download
memory/1164-129-0x00000000082A0000-0x00000000082A1000-memory.dmp

Filesize
4KB

Download
memory/1164-125-0x0000000007750000-0x0000000007751000-memory.dmp

Filesize
4KB

Download
memory/1164-124-0x00000000076B0000-0x00000000076B1000-memory.dmp

Filesize
4KB

Download
memory/1164-123-0x0000000006A02000-0x0000000006A03000-memory.dmp

Filesize
4KB

Download
memory/1164-122-0x0000000006A00000-0x0000000006A01000-memory.dmp

Filesize
4KB

Download
memory/1164-121-0x0000000007040000-0x0000000007041000-memory.dmp

Filesize
4KB

Download
memory/1164-120-0x0000000006980000-0x0000000006981000-memory.dmp

Filesize
4KB

Download
memory/1164-117-0x0000000000000000-mapping.dmp

Download
memory/1420-704-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1420-705-0x00000000004010B8-mapping.dmp

Download
memory/1420-706-0x0000000001570000-0x00000000016C3000-memory.dmp

Filesize
1.3MB

Download
memory/1420-707-0x0000000001571000-0x000000000166D000-memory.dmp

Filesize
1008KB

Download
memory/1420-717-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1700-719-0x0000000000000000-mapping.dmp

Download
memory/1960-710-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1960-711-0x0000000000401364-mapping.dmp

Download
memory/1960-714-0x0000000002F90000-0x00000000030E3000-memory.dmp

Filesize
1.3MB

Download
memory/1960-715-0x0000000002F91000-0x000000000308D000-memory.dmp

Filesize
1008KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads