xpertrat | 877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248

Analysis

max time kernel
133s
max time network
144s
platform
windows10_x64
resource
win10v20210408
submitted
22-04-2021 10:26

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General

Target

00279cce20bb484f9ea1b89efc6be08e.exe
Size

918KB
MD5

00279cce20bb484f9ea1b89efc6be08e
SHA1

da931ab637a622626fc2fb8a326fd6ccce931f66
SHA256

877b28707372fb7365c52a314233c74877045cf1d8143fe83fb257f0bf90c248
SHA512

f7c61894b3d07cfbd9ee4aaf2fecefd3096d28feb02c43a39cf809ab441b5a82c9ddb534992f1a0fc552d4eed1465a56782eeee73abc27ddb67c74b910d71508

Score

10^/10

xpertrat xxx evasion persistence rat trojan upx

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

XXX

kapasky-antivirus.firewall-gateway.net:2054

kapasky-antivirus.firewall-gateway.net:4000

Mutex

U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7

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/3596-129-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral2/memory/3596-130-0x0000000000401364-mapping.dmp	xpertrat

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/2280-142-0x0000000000411654-mapping.dmp	MailPassView
behavioral2/memory/2280-141-0x0000000000400000-0x000000000041B000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/3136-145-0x0000000000400000-0x0000000000459000-memory.dmp	WebBrowserPassView
behavioral2/memory/3136-146-0x0000000000442F04-mapping.dmp	WebBrowserPassView

Nirsoft 6 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2280-142-0x0000000000411654-mapping.dmp	Nirsoft
behavioral2/memory/2280-141-0x0000000000400000-0x000000000041B000-memory.dmp	Nirsoft
behavioral2/memory/3136-145-0x0000000000400000-0x0000000000459000-memory.dmp	Nirsoft
behavioral2/memory/3136-146-0x0000000000442F04-mapping.dmp	Nirsoft
behavioral2/memory/3972-154-0x0000000000400000-0x0000000000415000-memory.dmp	Nirsoft
behavioral2/memory/3972-155-0x000000000040C2A8-mapping.dmp	Nirsoft

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\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7 = "C:\\Users\\Admin\\AppData\\Roaming\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe"	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	iexplore.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2088-137-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/2324-150-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

00279cce20bb484f9ea1b89efc6be08e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0"	00279cce20bb484f9ea1b89efc6be08e.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
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7 = "C:\\Users\\Admin\\AppData\\Roaming\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.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\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7 = "C:\\Users\\Admin\\AppData\\Roaming\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7.exe"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	iexplore.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

00279cce20bb484f9ea1b89efc6be08e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	00279cce20bb484f9ea1b89efc6be08e.exe

Suspicious use of SetThreadContext 7 IoCs

Processes:

00279cce20bb484f9ea1b89efc6be08e.exe00279cce20bb484f9ea1b89efc6be08e.exeiexplore.exe

description	pid	process	target process
PID 1108 set thread context of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 3820 set thread context of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3596 set thread context of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 set thread context of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 set thread context of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 set thread context of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 set thread context of 3972	3596	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

00279cce20bb484f9ea1b89efc6be08e.exe00279cce20bb484f9ea1b89efc6be08e.exeiexplore.exeiexplore.exe

pid	process
1108	00279cce20bb484f9ea1b89efc6be08e.exe
1108	00279cce20bb484f9ea1b89efc6be08e.exe
1108	00279cce20bb484f9ea1b89efc6be08e.exe
1108	00279cce20bb484f9ea1b89efc6be08e.exe
3820	00279cce20bb484f9ea1b89efc6be08e.exe
3820	00279cce20bb484f9ea1b89efc6be08e.exe
3820	00279cce20bb484f9ea1b89efc6be08e.exe
3820	00279cce20bb484f9ea1b89efc6be08e.exe
2088	iexplore.exe
2088	iexplore.exe
3136	iexplore.exe
3136	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

00279cce20bb484f9ea1b89efc6be08e.exeiexplore.exeiexplore.exe

description	pid	process
Token: SeDebugPrivilege	1108	00279cce20bb484f9ea1b89efc6be08e.exe
Token: SeDebugPrivilege	3596	iexplore.exe
Token: SeDebugPrivilege	2088	iexplore.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

00279cce20bb484f9ea1b89efc6be08e.exeiexplore.exe

pid process

3820 00279cce20bb484f9ea1b89efc6be08e.exe
3596 iexplore.exe

pid	process
3820	00279cce20bb484f9ea1b89efc6be08e.exe
3596	iexplore.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

00279cce20bb484f9ea1b89efc6be08e.exe00279cce20bb484f9ea1b89efc6be08e.exeiexplore.exe

description	pid	process	target process
PID 1108 wrote to memory of 2228	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 2228	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 2228	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 2804	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 2804	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 2804	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 1108 wrote to memory of 3820	1108	00279cce20bb484f9ea1b89efc6be08e.exe	00279cce20bb484f9ea1b89efc6be08e.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3820 wrote to memory of 3596	3820	00279cce20bb484f9ea1b89efc6be08e.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2088	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2280	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3136	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 2324	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe
PID 3596 wrote to memory of 3972	3596	iexplore.exe	iexplore.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

00279cce20bb484f9ea1b89efc6be08e.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	00279cce20bb484f9ea1b89efc6be08e.exe

C:\Users\Admin\AppData\Local\Temp\00279cce20bb484f9ea1b89efc6be08e.exe
"C:\Users\Admin\AppData\Local\Temp\00279cce20bb484f9ea1b89efc6be08e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1108

C:\Users\Admin\AppData\Local\Temp\00279cce20bb484f9ea1b89efc6be08e.exe
"{path}"
2⤵
PID:2228

C:\Users\Admin\AppData\Local\Temp\00279cce20bb484f9ea1b89efc6be08e.exe
"{path}"
2⤵
PID:2804

C:\Users\Admin\AppData\Local\Temp\00279cce20bb484f9ea1b89efc6be08e.exe
"{path}"
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:3820

C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\00279cce20bb484f9ea1b89efc6be08e.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:3596

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil0.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2088

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil1.txt"
4⤵
PID:2280

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil2.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3136

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil3.txt"
4⤵
PID:2324

C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil4.txt"
4⤵
PID:3972

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\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil2.txt

MD5
f94dc819ca773f1e3cb27abbc9e7fa27

SHA1
9a7700efadc5ea09ab288544ef1e3cd876255086

SHA256
a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

SHA512
72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

Download Submit
C:\Users\Admin\AppData\Roaming\U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7\spwvlzmil4.txt

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1108-119-0x0000000005760000-0x0000000005761000-memory.dmp

Filesize
4KB

Download
memory/1108-117-0x00000000056C0000-0x00000000056C1000-memory.dmp

Filesize
4KB

Download
memory/1108-114-0x0000000000C60000-0x0000000000C61000-memory.dmp

Filesize
4KB

Download
memory/1108-120-0x00000000058A0000-0x00000000058AE000-memory.dmp

Filesize
56KB

Download
memory/1108-121-0x0000000007BF0000-0x0000000007BF1000-memory.dmp

Filesize
4KB

Download
memory/1108-122-0x0000000007DE0000-0x0000000007EBE000-memory.dmp

Filesize
888KB

Download
memory/1108-123-0x0000000002FA0000-0x0000000003030000-memory.dmp

Filesize
576KB

Download
memory/1108-118-0x00000000057C0000-0x0000000005CBE000-memory.dmp

Filesize
5.0MB

Download
memory/1108-116-0x0000000005CC0000-0x0000000005CC1000-memory.dmp

Filesize
4KB

Download
memory/2088-137-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2088-138-0x0000000000423BC0-mapping.dmp

Download
memory/2280-141-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2280-142-0x0000000000411654-mapping.dmp

Download
memory/2324-150-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2324-151-0x0000000000413750-mapping.dmp

Download
memory/3136-146-0x0000000000442F04-mapping.dmp

Download
memory/3136-145-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3596-134-0x0000000002ED1000-0x0000000002FCD000-memory.dmp

Filesize
1008KB

Download
memory/3596-133-0x0000000002ED0000-0x0000000003023000-memory.dmp

Filesize
1.3MB

Download
memory/3596-130-0x0000000000401364-mapping.dmp

Download
memory/3596-129-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/3820-126-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3820-125-0x00000000004010B8-mapping.dmp

Download
memory/3820-124-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3972-154-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3972-155-0x000000000040C2A8-mapping.dmp

Download