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 4 IoCs

resource	yara_rule
behavioral1/memory/584-1-0x0000000001340000-0x0000000001354000-memory.dmp	family_xworm
behavioral1/files/0x0003000000004ed5-10.dat	family_xworm
behavioral1/memory/2572-12-0x0000000000B40000-0x0000000000B54000-memory.dmp	family_xworm
behavioral1/memory/1568-15-0x0000000000DD0000-0x0000000000DE4000-memory.dmp	family_xworm

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

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
2572	Teams.exe
1568	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-1-5-21-1488793075-819845221-1497111674-1000\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
1800	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	584	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Token: SeDebugPrivilege	584	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe
Token: SeDebugPrivilege	2572	Teams.exe
Token: SeDebugPrivilege	1568	Teams.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 584 wrote to memory of 1800	584	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe	31
PID 584 wrote to memory of 1800	584	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe	31
PID 584 wrote to memory of 1800	584	7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4.exe	31
PID 2712 wrote to memory of 2572	2712	taskeng.exe	34
PID 2712 wrote to memory of 2572	2712	taskeng.exe	34
PID 2712 wrote to memory of 2572	2712	taskeng.exe	34
PID 2712 wrote to memory of 1568	2712	taskeng.exe	36
PID 2712 wrote to memory of 1568	2712	taskeng.exe	36
PID 2712 wrote to memory of 1568	2712	taskeng.exe	36

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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:584
- 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:1800

C:\Windows\system32\taskeng.exe
taskeng.exe {68139E31-CFCC-4318-8750-A0DA74AD4514} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Users\Admin\AppData\Roaming\Teams.exe
  C:\Users\Admin\AppData\Roaming\Teams.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- C:\Users\Admin\AppData\Roaming\Teams.exe
  C:\Users\Admin\AppData\Roaming\Teams.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1568

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
56KB

MD5
410b76ca7b805c7ad755519fb93d3740

SHA1
97c61311b9a3633ddadd041f84aedc907eb05f3e

SHA256
7ab284291b7ad166be5463f93366f54da420d970a7d52e2e740ddf5c6574efb4

SHA512
9d4ca5bfc333e951809dc9038b71719bfd901e070f42dc5585ff8a58e6ea7d8a1850bfb1d7454c501f6fd88bbdafa7a42116d454e20e6db1a4a29c24db3abd3d

Download Submit
memory/584-0-0x000007FEF59C3000-0x000007FEF59C4000-memory.dmp

Filesize
4KB

Download
memory/584-1-0x0000000001340000-0x0000000001354000-memory.dmp

Filesize
80KB

Download
memory/584-6-0x000007FEF59C0000-0x000007FEF63AC000-memory.dmp

Filesize
9.9MB

Download
memory/584-7-0x000007FEF59C3000-0x000007FEF59C4000-memory.dmp

Filesize
4KB

Download
memory/584-8-0x000007FEF59C0000-0x000007FEF63AC000-memory.dmp

Filesize
9.9MB

Download
memory/1568-15-0x0000000000DD0000-0x0000000000DE4000-memory.dmp

Filesize
80KB

Download
memory/2572-12-0x0000000000B40000-0x0000000000B54000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads