xehook | 17f929c1d40a7fd6f897c0b15ca9c44b2059cbccb3037c31619d87954659478e

General

Target

tmp.exe
Size

273KB
MD5

e795115169cc800de0392d6a675d58fd
SHA1

8dd75837e360ba1cb8acf5a3d348dd020a5da482
SHA256

17f929c1d40a7fd6f897c0b15ca9c44b2059cbccb3037c31619d87954659478e
SHA512

5fb6543e91de175bd365462a1cc87d6772e43b0effd3757b3e408b08a4de5a004de9a85e7f1d09578fa3bc6b6486c5f5016c1b879496582dbb39b2e62e168f38
SSDEEP

6144:s/wl9dobdtMJNPX459l2/FpnovRWf1RdSxWbkHg6O0:HdoRtMJRkQp2MY0QO0

Score

10^/10

xehook spyware stealer

Malware Config

Extracted

Family

xehook

C2

https://unotree.ru/

https://aiwhcpoaw.ru/

Signatures

Detect Xehook Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3796-0-0x00000000005A0000-0x00000000005E8000-memory.dmp	family_xehook
behavioral2/memory/3080-1-0x0000000000400000-0x000000000041C000-memory.dmp	family_xehook
behavioral2/memory/3796-2-0x00000000005A0000-0x00000000005E8000-memory.dmp	family_xehook

Xehook stealer
Xehook is an infostealer written in C#.
stealer xehook
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation RegAsm.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

18 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

tmp.exe

description pid process target process

PID 3796 set thread context of 3080 3796 tmp.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

RegAsm.exepowershell.exe

pid process

3080 RegAsm.exe
1128 powershell.exe
1128 powershell.exe
1128 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegAsm.exepowershell.exe

description pid process

Token: SeDebugPrivilege 3080 RegAsm.exe
Token: SeDebugPrivilege 1128 powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	RegAsm.exe

flow	ioc
18	ip-api.com

description	pid	process	target process
PID 3796 set thread context of 3080	3796	tmp.exe	RegAsm.exe

pid	process
3080	RegAsm.exe
1128	powershell.exe
1128	powershell.exe
1128	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3080	RegAsm.exe
Token: SeDebugPrivilege	1128	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

tmp.exeRegAsm.exe

description	pid	process	target process
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3796 wrote to memory of 3080	3796	tmp.exe	RegAsm.exe
PID 3080 wrote to memory of 1128	3080	RegAsm.exe	powershell.exe
PID 3080 wrote to memory of 1128	3080	RegAsm.exe	powershell.exe
PID 3080 wrote to memory of 1128	3080	RegAsm.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "Start-Process 'C:\Users\Admin\AppData\Roaming\0P6FUWWL20.exe'"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xkbaavp4.45h.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\0P6FUWWL20.exe

Filesize
70KB

MD5
f37d84651e42220cbcb250178d439094

SHA1
93c5009a8f7044de9d8b908c59f263f346064e6b

SHA256
c776dc63c63ee5b5cb33c33a0ee1efe1c9299ff272f655a25c19d43dba724fb1

SHA512
a3c8ecf705bae945f596385acb9d5948bd23ab073461fa61a45d5eb4e7b0d009299b8c360fcc14976f3f8face6feb13fc0b8c36519641bfe6421716d1bf364d1

Download Submit
memory/1128-33-0x00000000061C0000-0x000000000620C000-memory.dmp

Filesize
304KB

Download
memory/1128-30-0x0000000005BE0000-0x0000000005C46000-memory.dmp

Filesize
408KB

Download
memory/1128-19-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/1128-36-0x00000000071F0000-0x0000000007212000-memory.dmp

Filesize
136KB

Download
memory/1128-35-0x00000000071A0000-0x00000000071BA000-memory.dmp

Filesize
104KB

Download
memory/1128-34-0x0000000007220000-0x00000000072B6000-memory.dmp

Filesize
600KB

Download
memory/1128-32-0x0000000006120000-0x000000000613E000-memory.dmp

Filesize
120KB

Download
memory/1128-17-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1128-25-0x00000000053D0000-0x00000000053F2000-memory.dmp

Filesize
136KB

Download
memory/1128-16-0x0000000004DB0000-0x0000000004DE6000-memory.dmp

Filesize
216KB

Download
memory/1128-40-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1128-31-0x0000000005CC0000-0x0000000006014000-memory.dmp

Filesize
3.3MB

Download
memory/1128-18-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/3080-4-0x0000000005E80000-0x0000000006424000-memory.dmp

Filesize
5.6MB

Download
memory/3080-3-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/3080-13-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/3080-7-0x0000000007030000-0x00000000070C2000-memory.dmp

Filesize
584KB

Download
memory/3080-6-0x0000000006A60000-0x0000000006AC6000-memory.dmp

Filesize
408KB

Download
memory/3080-5-0x0000000005A80000-0x0000000005A90000-memory.dmp

Filesize
64KB

Download
memory/3080-1-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3796-0-0x00000000005A0000-0x00000000005E8000-memory.dmp

Filesize
288KB

Download
memory/3796-2-0x00000000005A0000-0x00000000005E8000-memory.dmp

Filesize
288KB

Download

Analysis

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