xpertrat | 524881f1bcc00d0a27ab7829b776e32844b3e9f19cea0bfae32b95a6a8006ffc

General

Target

RT 009435 PO-20220207.pdf(78KB).exe
Size

344KB
MD5

2c9e55d24d5853836195834ea08d31ba
SHA1

d4b531649a46e252dbaa6bdb279b9dc18d8b3bd4
SHA256

524881f1bcc00d0a27ab7829b776e32844b3e9f19cea0bfae32b95a6a8006ffc
SHA512

8fe29a8a484016b335ceb85d417f0375d59f5e2995c734d65cf8c4c10b787520cf1bca6475d6b07cb027b5410fe8155003c0668d70b4b7eb21be31fbdd8644cd

Score

10^/10

xpertrat collection evasion persistence rat trojan

Malware Config

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

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7 = "C:\\Users\\Admin\\AppData\\Roaming\\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe

Loads dropped DLL 1 IoCs

Processes:

RT 009435 PO-20220207.pdf(78KB).exe

pid process

1128 RT 009435 PO-20220207.pdf(78KB).exe

pid	process
1128	RT 009435 PO-20220207.pdf(78KB).exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

RT 009435 PO-20220207.pdf(78KB).exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	RT 009435 PO-20220207.pdf(78KB).exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RT 009435 PO-20220207.pdf(78KB).exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\momewbqdh = "C:\\Users\\Admin\\AppData\\Roaming\\chkka\\bhpr.exe"	RT 009435 PO-20220207.pdf(78KB).exe
Key created	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7 = "C:\\Users\\Admin\\AppData\\Roaming\\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7.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\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7 = "C:\\Users\\Admin\\AppData\\Roaming\\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7.exe"	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RT 009435 PO-20220207.pdf(78KB).exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RT 009435 PO-20220207.pdf(78KB).exe

Suspicious use of SetThreadContext 7 IoCs

Processes:

RT 009435 PO-20220207.pdf(78KB).exeRT 009435 PO-20220207.pdf(78KB).exeiexplore.exe

description	pid	process	target process
PID 1128 set thread context of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1740 set thread context of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1532 set thread context of 868	1532	iexplore.exe	iexplore.exe
PID 1532 set thread context of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 set thread context of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 set thread context of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 set thread context of 576	1532	iexplore.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 2 IoCs

Processes:

RT 009435 PO-20220207.pdf(78KB).exe

pid process

1740 RT 009435 PO-20220207.pdf(78KB).exe
1740 RT 009435 PO-20220207.pdf(78KB).exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

iexplore.exeiexplore.exe

description pid process

Token: SeDebugPrivilege 1532 iexplore.exe
Token: SeDebugPrivilege 868 iexplore.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

RT 009435 PO-20220207.pdf(78KB).exeiexplore.exe

pid process

1740 RT 009435 PO-20220207.pdf(78KB).exe
1532 iexplore.exe

pid	process
1740	RT 009435 PO-20220207.pdf(78KB).exe
1740	RT 009435 PO-20220207.pdf(78KB).exe

description	pid	process
Token: SeDebugPrivilege	1532	iexplore.exe
Token: SeDebugPrivilege	868	iexplore.exe

pid	process
1740	RT 009435 PO-20220207.pdf(78KB).exe
1532	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

RT 009435 PO-20220207.pdf(78KB).exeRT 009435 PO-20220207.pdf(78KB).exeiexplore.exe

description	pid	process	target process
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1128 wrote to memory of 1740	1128	RT 009435 PO-20220207.pdf(78KB).exe	RT 009435 PO-20220207.pdf(78KB).exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1740 wrote to memory of 1532	1740	RT 009435 PO-20220207.pdf(78KB).exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 868	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1912	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1204	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 1564	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe
PID 1532 wrote to memory of 576	1532	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

RT 009435 PO-20220207.pdf(78KB).exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RT 009435 PO-20220207.pdf(78KB).exe

C:\Users\Admin\AppData\Local\Temp\RT 009435 PO-20220207.pdf(78KB).exe
"C:\Users\Admin\AppData\Local\Temp\RT 009435 PO-20220207.pdf(78KB).exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1128

C:\Users\Admin\AppData\Local\Temp\RT 009435 PO-20220207.pdf(78KB).exe
"C:\Users\Admin\AppData\Local\Temp\RT 009435 PO-20220207.pdf(78KB).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:1740

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\RT 009435 PO-20220207.pdf(78KB).exe
3⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1532

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg0.txt"
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:868

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg1.txt"
4⤵
- Accesses Microsoft Outlook accounts
PID:1912

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg2.txt"
4⤵
PID:1204

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg3.txt"
4⤵
PID:1564

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg4.txt"
4⤵
PID:576

Network

MITRE ATT&CK Enterprise 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

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg2.txt
MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\W550U6F4-U1L8-W8B6-B6S5-A8Y7R551N7N7\dlhxkrtgg4.txt
MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nswE3AC.tmp\vrhlgxyny.dll
MD5
b9754bd6784133e70c5fbc565ba101f4

SHA1
2340f706dd48dabd1144f454c301bc5e87e63cc3

SHA256
18cc02c2c6cb2fee75e422163bbafbfc42cce7a191d5364f8b34767b833649ae

SHA512
d4dba9d0557c8c12f57ce2230b7fae9bf95e408f54af6a9cc1cb7b1657d711960d66e20c21a46b2caa69b2181b8eb175b81e03128dd2d900b6d1dffe911459f5

Download Submit
memory/1128-54-0x0000000075761000-0x0000000075763000-memory.dmp

Filesize
8KB

Download
memory/1740-56-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads