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

pid	Process
224	loader.exe
312	SteamUDPUpdater.exe
4924	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

pid	Process
3976	schtasks.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe
4924	SteamUDPUpdater.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4924	SteamUDPUpdater.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
224	loader.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3748 wrote to memory of 224	3748	loader_2.exe	75
PID 3748 wrote to memory of 224	3748	loader_2.exe	75
PID 3748 wrote to memory of 224	3748	loader_2.exe	75
PID 3748 wrote to memory of 312	3748	loader_2.exe	76
PID 3748 wrote to memory of 312	3748	loader_2.exe	76
PID 3748 wrote to memory of 312	3748	loader_2.exe	76
PID 312 wrote to memory of 4924	312	SteamUDPUpdater.exe	77
PID 312 wrote to memory of 4924	312	SteamUDPUpdater.exe	77
PID 312 wrote to memory of 4924	312	SteamUDPUpdater.exe	77
PID 4924 wrote to memory of 3976	4924	SteamUDPUpdater.exe	78
PID 4924 wrote to memory of 3976	4924	SteamUDPUpdater.exe	78
PID 4924 wrote to memory of 3976	4924	SteamUDPUpdater.exe	78

C:\Users\Admin\AppData\Local\Temp\loader_2.exe
"C:\Users\Admin\AppData\Local\Temp\loader_2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3748
- C:\Users\Admin\AppData\Local\loader.exe
  "C:\Users\Admin\AppData\Local\loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of FindShellTrayWindow
  PID:224
- C:\Users\Admin\AppData\Local\SteamUDPUpdater.exe
  "C:\Users\Admin\AppData\Local\SteamUDPUpdater.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:312
- - 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:4924
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /Create /TN "SteamUDPUpdater" /XML "C:\Users\Admin\AppData\Local\Temp\tmp806B.tmp" /F
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:3976

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\tmp806B.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/224-18-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

Filesize
40KB

Download
memory/224-14-0x0000000005320000-0x000000000581E000-memory.dmp

Filesize
5.0MB

Download
memory/224-13-0x0000000073110000-0x00000000737FE000-memory.dmp

Filesize
6.9MB

Download
memory/224-15-0x0000000004E20000-0x0000000004EB2000-memory.dmp

Filesize
584KB

Download
memory/224-17-0x0000000073110000-0x00000000737FE000-memory.dmp

Filesize
6.9MB

Download
memory/224-12-0x0000000000540000-0x000000000056A000-memory.dmp

Filesize
168KB

Download
memory/224-29-0x0000000073110000-0x00000000737FE000-memory.dmp

Filesize
6.9MB

Download
memory/312-11-0x0000000000FE0000-0x0000000001002000-memory.dmp

Filesize
136KB

Download
memory/312-10-0x000000007311E000-0x000000007311F000-memory.dmp

Filesize
4KB

Download
memory/4924-27-0x0000000005EE0000-0x0000000005F46000-memory.dmp

Filesize
408KB

Download
memory/4924-30-0x0000000005AB0000-0x0000000005ABA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads