xworm | 7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4

General

Target

7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Size

56KB
MD5

410b76ca7b805c7ad755519fb93d3740
SHA1

97c61311b9a3633ddadd041f84aedc907eb05f3e
SHA256

7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4
SHA512

9d4ca5bfc333e951809dc9038b71719bfd901e070f42dc5585ff8a58e6ea7d8a1850bfb1d7454c501f6fd88bbdafa7a42116d454e20e6db1a4a29c24db3abd3d
SSDEEP

1536:ASFTU9xZVqGdtCfBXdi99iQTkbb4IJlqRp2OHLQU:ASFTUNVq04fBti91Tkbb8Rp2OHLQU

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

Cactus-33152.portmap.host:33152

Attributes

Install_directory
%AppData%
install_file
Teams.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3604-1-0x0000000000CD0000-0x0000000000CE4000-memory.dmp	family_xworm
behavioral2/files/0x000a00000001e58a-10.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Teams.lnk	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Teams.lnk	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe

Executes dropped EXE 2 IoCs

pid	Process
1856	Teams.exe
1224	Teams.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\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Teams = "C:\\Users\\Admin\\AppData\\Roaming\\Teams.exe"	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4780	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3604	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Token: SeDebugPrivilege	3604	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Token: SeDebugPrivilege	1856	Teams.exe
Token: SeDebugPrivilege	1224	Teams.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3604 wrote to memory of 4780	3604	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe	94
PID 3604 wrote to memory of 4780	3604	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe	94

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
"C:\Users\Admin\AppData\Local\Temp\7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3604
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Teams" /tr "C:\Users\Admin\AppData\Roaming\Teams.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4780

C:\Users\Admin\AppData\Roaming\Teams.exe
C:\Users\Admin\AppData\Roaming\Teams.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1856

C:\Users\Admin\AppData\Roaming\Teams.exe
C:\Users\Admin\AppData\Roaming\Teams.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Teams.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\Teams.exe

Filesize
56KB

MD5
410b76ca7b805c7ad755519fb93d3740

SHA1
97c61311b9a3633ddadd041f84aedc907eb05f3e

SHA256
7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4

SHA512
9d4ca5bfc333e951809dc9038b71719bfd901e070f42dc5585ff8a58e6ea7d8a1850bfb1d7454c501f6fd88bbdafa7a42116d454e20e6db1a4a29c24db3abd3d

Download Submit
memory/1856-12-0x00007FFD8D800000-0x00007FFD8E2C1000-memory.dmp

Filesize
10.8MB

Download
memory/1856-14-0x00007FFD8D800000-0x00007FFD8E2C1000-memory.dmp

Filesize
10.8MB

Download
memory/3604-0-0x00007FFD8D803000-0x00007FFD8D805000-memory.dmp

Filesize
8KB

Download
memory/3604-1-0x0000000000CD0000-0x0000000000CE4000-memory.dmp

Filesize
80KB

Download
memory/3604-6-0x00007FFD8D800000-0x00007FFD8E2C1000-memory.dmp

Filesize
10.8MB

Download
memory/3604-7-0x00007FFD8D803000-0x00007FFD8D805000-memory.dmp

Filesize
8KB

Download
memory/3604-8-0x00007FFD8D800000-0x00007FFD8E2C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads