xenorat | 8a9ab6c659fa30fc1ac9548bdea3300ab9d829f8a085131aa5e5024f67cacc81

General

Target

loader_2.exe
Size

326KB
MD5

6939b30d8705c734e0f6b4a0233d93f9
SHA1

cdd90c3907aeef8d90811f6725fe2cb4d19df284
SHA256

8a9ab6c659fa30fc1ac9548bdea3300ab9d829f8a085131aa5e5024f67cacc81
SHA512

180ec7d0fdda57e9cb22853faa8741a8d101628d827e15c7b5c2f1ea4401de022caded5b8b903b04046101d8d0db955abf1208e7b8d7a85819ff312f37f493b0
SSDEEP

3072:2wSELLlHKjv7QVG6NDAlLykEKnTNG/ph+8BT0dTb3e4cL:2wSELLlcn6MLyJ6Ab+8BT0dKL

Score

10^/10

xenorat rat trojan

Malware Config

Extracted

Family

xenorat

C2

37.120.141.155

Mutex

SteamUDP_FULL

Attributes

delay
5000
install_path
temp
port
22914
startup_name
SteamUDPUpdater

Signatures

XenorRat
XenorRat is a remote access trojan written in C#.
trojan rat xenorat
Executes dropped EXE 3 IoCs

Processes:

loader.exeSteamUDPUpdater.exeSteamUDPUpdater.exe

pid process

3292 loader.exe
2156 SteamUDPUpdater.exe
4604 SteamUDPUpdater.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

Processes:

schtasks.exe

pid process

4528 schtasks.exe

pid	process
3292	loader.exe
2156	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe

pid	process
4528	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

SteamUDPUpdater.exe

pid	process
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe
4604	SteamUDPUpdater.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SteamUDPUpdater.exe

description pid process

Token: SeDebugPrivilege 4604 SteamUDPUpdater.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

loader.exe

pid process

3292 loader.exe

description	pid	process
Token: SeDebugPrivilege	4604	SteamUDPUpdater.exe

pid	process
3292	loader.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

loader_2.exeSteamUDPUpdater.exeSteamUDPUpdater.execmd.exe

description	pid	process	target process
PID 4372 wrote to memory of 3292	4372	loader_2.exe	loader.exe
PID 4372 wrote to memory of 3292	4372	loader_2.exe	loader.exe
PID 4372 wrote to memory of 3292	4372	loader_2.exe	loader.exe
PID 4372 wrote to memory of 2156	4372	loader_2.exe	SteamUDPUpdater.exe
PID 4372 wrote to memory of 2156	4372	loader_2.exe	SteamUDPUpdater.exe
PID 4372 wrote to memory of 2156	4372	loader_2.exe	SteamUDPUpdater.exe
PID 2156 wrote to memory of 4604	2156	SteamUDPUpdater.exe	SteamUDPUpdater.exe
PID 2156 wrote to memory of 4604	2156	SteamUDPUpdater.exe	SteamUDPUpdater.exe
PID 2156 wrote to memory of 4604	2156	SteamUDPUpdater.exe	SteamUDPUpdater.exe
PID 4604 wrote to memory of 4528	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 4528	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 4528	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 4356	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 4356	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 4356	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 5096	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 5096	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 5096	4604	SteamUDPUpdater.exe	schtasks.exe
PID 4604 wrote to memory of 4424	4604	SteamUDPUpdater.exe	cmd.exe
PID 4604 wrote to memory of 4424	4604	SteamUDPUpdater.exe	cmd.exe
PID 4604 wrote to memory of 4424	4604	SteamUDPUpdater.exe	cmd.exe
PID 4424 wrote to memory of 4368	4424	cmd.exe	choice.exe
PID 4424 wrote to memory of 4368	4424	cmd.exe	choice.exe
PID 4424 wrote to memory of 4368	4424	cmd.exe	choice.exe

C:\Users\Admin\AppData\Local\Temp\loader_2.exe
"C:\Users\Admin\AppData\Local\Temp\loader_2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4372

C:\Users\Admin\AppData\Local\loader.exe
"C:\Users\Admin\AppData\Local\loader.exe"
2⤵
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
PID:3292

C:\Users\Admin\AppData\Local\SteamUDPUpdater.exe
"C:\Users\Admin\AppData\Local\SteamUDPUpdater.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2156

C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDPUpdater.exe
"C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDPUpdater.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4604

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /Create /TN "SteamUDPUpdater" /XML "C:\Users\Admin\AppData\Local\Temp\tmp74F1.tmp" /F
4⤵
- Scheduled Task/Job: Scheduled Task
PID:4528

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /query /v /fo csv
4⤵
PID:4356

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /delete /tn "\SteamUDPUpdater" /f
4⤵
PID:5096

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDPUpdater.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:4424

C:\Windows\SysWOW64\choice.exe
choice /C Y /N /D Y /T 3
5⤵
PID:4368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SteamUDPUpdater.exe.log
Filesize
226B

MD5
957779c42144282d8cd83192b8fbc7cf

SHA1
de83d08d2cca06b9ff3d1ef239d6b60b705d25fe

SHA256
0d7ca7ba65e2b465e4878e324ceab8f8981f5ec06dcf5bc32559a4467a9c7d51

SHA512
f1549c61b4f2906d13b2aabb74772c2bc826cd42373d7bb6c48cbb125d5aa2ec17617e6b5e67e8aae3bb5790cc831cdba48a45008ed01df4fba8be448cce39fd

Download Submit
C:\Users\Admin\AppData\Local\SteamUDPUpdater.exe
Filesize
112KB

MD5
9908883bbcee91c29c9086198d8d8146

SHA1
eae0d98cd5147fe75379c165900f1b07d4970505

SHA256
829d1379ee5a8da6b21af8a5c4dd9c262a569847b2664d39f5c415e0dc74c399

SHA512
4706586c902c7deaba67a7c58ed60df4960cbee62d63148b05c4d82b83fc685f61201904d09615936d1a505f0ca61cd376a7fe37e19b3570f51c73a740073629

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp74F1.tmp
Filesize
1KB

MD5
7e03b8c9c7305c78624446dba94eb3a5

SHA1
55b4852ba7d35a67e8002a80d7dac120a8ca486f

SHA256
120dad18a95e7a371e4b00c0afe04670ba14112945c557e956839eec825545a9

SHA512
3902fd679455405018dcf87a9510a2ad5ac29a991b96eb69f4cf49e502ebba19a5b8ee6f875ea0a8d4db7f31c96b8110111163492cd25378c0588279388295c6

Download Submit
C:\Users\Admin\AppData\Local\loader.exe
Filesize
143KB

MD5
f701562eb6bc2d60da82bb8fe907594e

SHA1
b4a927d39ec3eb6fbf3ff087ee4d23dc9dfc158c

SHA256
17e8ea093d6505417598efa6d8b888fd164bb1e0006fa2e466c9d20e0dadb859

SHA512
bf2f37d5764e57195d5688b0fcd179f471605cacb6c1adfaa6abbce821a83217fb9fecd2a28c87253fe4de126aa42e82e79e639359ebdf1a1b7b11ae448a63d2

Download Submit
memory/2156-12-0x00000000000F0000-0x0000000000112000-memory.dmp

Filesize
136KB

Download
memory/2156-14-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-25-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/3292-13-0x0000000005CC0000-0x00000000061BE000-memory.dmp

Filesize
5.0MB

Download
memory/3292-15-0x0000000005860000-0x00000000058F2000-memory.dmp

Filesize
584KB

Download
memory/3292-17-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/3292-11-0x0000000000F70000-0x0000000000F9A000-memory.dmp

Filesize
168KB

Download
memory/3292-23-0x0000000005800000-0x000000000580A000-memory.dmp

Filesize
40KB

Download
memory/3292-10-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/3292-29-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/3292-30-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/4604-28-0x0000000005BB0000-0x0000000005C16000-memory.dmp

Filesize
408KB

Download
memory/4604-31-0x0000000005720000-0x000000000572A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads