xworm | c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc

General

Target
c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe
Size 2.2MB
Sample260809-wl2dsswtfv
SHA256 c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc
MD5 24716e14e19d191b25146524d92544af
SHA1 069dcc1f535c674c90a389aaa07ede3e734281e9
SHA512 4178a40db0534e50756b2e31b170f240bd7954243e4eef0114684b0d0e7f16293be04bd1f0a622ab9bf5790b12f5c74d969d29983e4bad09cfb975ab45209700
SSDEEP 24576:Bgp5BNnvoCzuSiwznsebo1UsFonsbbHf1H2uAzlMfBNN0OzV6DNUOPXX3n5DpnFz:BgpNQCzziwuTAzlM2N+1ycnZlnm5uo
TLSH
T1DCA5BE14E3E811A9E463DA34CB51A333D6B178624775E49F0A99C30A1F77E928F7B702
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

203.202.232.132:2828

Mutex

XUhZctuZtD9oWuI7

Attributes

install_file
USB.exe

aes.plain

Signatures

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

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3040-1-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AppData = "cmd /c start \"\" /D \"C:\\ProgramData\\AppData\" c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe"	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4116 set thread context of 3040	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	86
PID 3120 set thread context of 4548	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	jsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jsc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe
Token: SeDebugPrivilege	3040	jsc.exe
Token: SeDebugPrivilege	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe
Token: SeDebugPrivilege	4548	jsc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4116 wrote to memory of 3040	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	86
PID 4116 wrote to memory of 3040	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	86
PID 4116 wrote to memory of 3040	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	86
PID 4116 wrote to memory of 3040	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	86
PID 4116 wrote to memory of 3040	4116	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	86
PID 3660 wrote to memory of 3120	3660	cmd.exe	89
PID 3120 wrote to memory of 4548	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	91
PID 3120 wrote to memory of 4548	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	91
PID 3120 wrote to memory of 4548	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	91
PID 3120 wrote to memory of 4548	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	91
PID 3120 wrote to memory of 4548	3120	c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe	91

C:\Users\Admin\AppData\Local\Temp\c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe
"C:\Users\Admin\AppData\Local\Temp\c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4116
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3040

C:\Windows\system32\cmd.exe
"cmd /c start "" /D "C:\ProgramData\AppData" c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3660
- C:\ProgramData\AppData\c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe
  "C:\ProgramData\AppData\c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3120
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4548

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe

Path C:\ProgramData\AppData\c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc.exe
Size 2.2MB
SHA256 c394b09989c31d4f1c9f73a806458159c1df03132ae97f578abe43b56fa832fc
MD5 24716e14e19d191b25146524d92544af
SHA1 069dcc1f535c674c90a389aaa07ede3e734281e9
SHA512 4178a40db0534e50756b2e31b170f240bd7954243e4eef0114684b0d0e7f16293be04bd1f0a622ab9bf5790b12f5c74d969d29983e4bad09cfb975ab45209700
SSDEEP 24576:Bgp5BNnvoCzuSiwznsebo1UsFonsbbHf1H2uAzlMfBNN0OzV6DNUOPXX3n5DpnFz:BgpNQCzziwuTAzlM2N+1ycnZlnm5uo
TLSH
T1DCA5BE14E3E811A9E463DA34CB51A333D6B178624775E49F0A99C30A1F77E928F7B702
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3040-1-0x0000000000400000-0x000000000040E000-memory.dmp

Download

memory/3040-2-0x00000000058D0000-0x000000000596C000-memory.dmp

Download

memory/3040-4-0x0000000005800000-0x0000000005810000-memory.dmp

Download

memory/3040-8-0x0000000005800000-0x0000000005810000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads