xworm | 8f8830b812c8f50559cddc20140148f16c2c6681b8087da382aab91a1d22e088

General

Target

SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe
Size

315KB
MD5

918f83cd6d935bd729990142f8e276e0
SHA1

bd15b5a29a83b86d1ab177f16f6d0f3a54dc6741
SHA256

8f8830b812c8f50559cddc20140148f16c2c6681b8087da382aab91a1d22e088
SHA512

c8e529a268fa1ca589d362538b9b9368a518cdead33cbe383dbb7ffdcced101950911e0cea4ebf0b5343583e48e3b8b490c3167874505a09d53da57cf25f05f1
SSDEEP

1536:LTJkxPIwcXpo/s/wyQC7CEJ0nMbYcj/RPc4YjDI4ox0V+s4jDu3Eyufeso1+qUQB:LNqP3UW/s4LQYGhcC1yufwqXYoQN

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

185.7.214.211:4444

aes.plain

Signatures

Detect Xworm Payload 7 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015d5b-14.dat	family_xworm
behavioral1/memory/2380-15-0x0000000000200000-0x0000000000210000-memory.dmp	family_xworm
behavioral1/memory/2628-27-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2628-25-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2628-23-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2628-20-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/2628-19-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2628	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2812	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	30
PID 2380 wrote to memory of 2812	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	30
PID 2380 wrote to memory of 2812	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	30
PID 2380 wrote to memory of 2812	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	30
PID 2812 wrote to memory of 2276	2812	csc.exe	32
PID 2812 wrote to memory of 2276	2812	csc.exe	32
PID 2812 wrote to memory of 2276	2812	csc.exe	32
PID 2812 wrote to memory of 2276	2812	csc.exe	32
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33
PID 2380 wrote to memory of 2628	2380	SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe	33

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.5196.22979.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\4og4bv4t\4og4bv4t.cmdline"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES537D.tmp" "c:\Users\Admin\AppData\Local\Temp\4og4bv4t\CSC1EEE7CBE5E2F4C1AA156AA84D3A6D3BE.TMP"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2276
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\4og4bv4t\4og4bv4t.dll

Filesize
41KB

MD5
db5db9d201742ad2d9aee11ae460d897

SHA1
4e35f0e54ea2f13b0b1f3c447d76a9ad3700310b

SHA256
71363ace078f866d191f74dfa1ab5118837fe3c62cd64465d1667acd51415676

SHA512
06301410dab200d5ad04f7b6b336088588cf2e3e0ffe4685b7b5b937acd2e2d05246bd5bb04d29fce5650ac3f4c009952e1e6840d099634516531ca9d70197e0

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES537D.tmp

Filesize
1KB

MD5
f1d4c84511fdc53de1db69d7ee51b201

SHA1
80bb1a888f6e6a861dbfc7d3028825580444dace

SHA256
72bbc633f054339b3bdda8b29ae391abc76b6c918e01246b734a838815efe3e5

SHA512
7130745fe785935f8fb4daac6efa459cf9a4f60a66658621ea67ef8a314e9e854621501552241b06318590d9cf05b4a3e74562107f3f57f92893c49aeed9319e

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\4og4bv4t\4og4bv4t.0.cs

Filesize
101KB

MD5
321752ec5d5fef01d4f146035796f9df

SHA1
a46dbf6fb95d498fd733d4fde9a3d1b5917ba1f3

SHA256
9e9c63652e73aeaf0904794cfe6428f5f72faa493a6d9815dadceb3ef911a393

SHA512
5a52ac4a13f4bb6b5813fc3ca446e3366e4902acb7675356a2d675ee612d2bd3affdebc1c446e59a1cc2ab64640b59a09b2e00c25729ccb4c93b1985249b9d73

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\4og4bv4t\4og4bv4t.cmdline

Filesize
204B

MD5
9bfef409541072064617673ce616a2a8

SHA1
1d10055240f7b135914e0415991693e47177e064

SHA256
c9cbed93e578a7ecf0e764ec8e2b049846ed8a26bbe4d9cce4485d501ede1d79

SHA512
b326e2f81d779baa1c7e0c82da9cfef089b8c8e6fe7de43ad656648ed5026483be16e7a993a89c224e874d713c98f9663598ea83b37bbd10f6586a97133e0467

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\4og4bv4t\CSC1EEE7CBE5E2F4C1AA156AA84D3A6D3BE.TMP

Filesize
652B

MD5
d0c26bf23276e01a0d10f1f74f0b0b98

SHA1
2b5b7e88bc9776b6e756c60735a8f113e412b6a8

SHA256
b854fed1db14f34b5a43b505b97e1bf86fdc8fe2f0d75273240488bd0b2da1aa

SHA512
694c9e710340d8fbda7c9b3f0be2dc32e47884beb9d1fc42646700d5d8a5ec6af3b95a98c30d42f5725aafaa3bfb3c2717ca39189e74f33f9d6d7e278eb881b6

Download Submit
memory/2380-28-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-0-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/2380-1-0x0000000001220000-0x0000000001274000-memory.dmp

Filesize
336KB

Download
memory/2380-15-0x0000000000200000-0x0000000000210000-memory.dmp

Filesize
64KB

Download
memory/2380-5-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-21-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-27-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-25-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-23-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-18-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-20-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-19-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2628-29-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-30-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-31-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-32-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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