xtremerat | 94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee

General

Target

94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe
Size

430KB
MD5

0d825739298426f4fb430778ccf563ec
SHA1

503f325e2f13e6a3a8339f78e90a5368b4f4d81f
SHA256

94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee
SHA512

1a6c28b7615f6da08afcfd29a5d3db12c758bdb93f008232275d619e821bbca7580fedb017164075860d5c4c3a92fb7dd7d1c35ed2a282ba14ff5b14aa67bf38
SSDEEP

12288:f9BvctM85t35JPNJj2WzoRLQYRYzmYs9T6PS0M:fD0tM85tbNJjldeYiYsRZN

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

sasitina.no-ip.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4880-137-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/4960-139-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4880-141-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat

Executes dropped EXE 1 IoCs

pid	Process
4960	Sdat.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3232-132-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/3232-133-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/files/0x0004000000000721-135.dat	upx
behavioral2/files/0x0004000000000721-136.dat	upx
behavioral2/memory/4960-139-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3232-140-0x0000000000400000-0x00000000004B1000-memory.dmp	upx
behavioral2/memory/4880-141-0x0000000010000000-0x000000001004D000-memory.dmp	upx

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3232-133-0x0000000000400000-0x00000000004B1000-memory.dmp	autoit_exe
behavioral2/memory/3232-140-0x0000000000400000-0x00000000004B1000-memory.dmp	autoit_exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1488	4880	WerFault.exe	83
1940	4880	WerFault.exe	83

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4380	PING.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3232 wrote to memory of 4960	3232	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe	82
PID 3232 wrote to memory of 4960	3232	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe	82
PID 3232 wrote to memory of 4960	3232	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe	82
PID 4960 wrote to memory of 4880	4960	Sdat.exe	83
PID 4960 wrote to memory of 4880	4960	Sdat.exe	83
PID 4960 wrote to memory of 4880	4960	Sdat.exe	83
PID 4960 wrote to memory of 4880	4960	Sdat.exe	83
PID 4960 wrote to memory of 4780	4960	Sdat.exe	84
PID 4960 wrote to memory of 4780	4960	Sdat.exe	84
PID 3232 wrote to memory of 3128	3232	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe	86
PID 3232 wrote to memory of 3128	3232	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe	86
PID 3232 wrote to memory of 3128	3232	94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe	86
PID 4960 wrote to memory of 4780	4960	Sdat.exe	84
PID 3128 wrote to memory of 4380	3128	cmd.exe	89
PID 3128 wrote to memory of 4380	3128	cmd.exe	89
PID 3128 wrote to memory of 4380	3128	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe
"C:\Users\Admin\AppData\Local\Temp\94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Users\Admin\AppData\Roaming\Sdat.exe
  C:\Users\Admin\AppData\Roaming\Sdat.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4960
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4880
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 488
      4⤵
      Program crash
      PID:1488
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 496
      4⤵
      Program crash
      PID:1940
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c ping 0.0.0.1 -n 1 -w 1000 & del 94761823818df0f756c26082e55af289d706ea22b927730a8e18aa72393475ee.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3128
- - C:\Windows\SysWOW64\PING.EXE
    ping 0.0.0.1 -n 1 -w 1000
    3⤵
    - Runs ping.exe
    PID:4380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4880 -ip 4880
1⤵
PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4880 -ip 4880
1⤵
PID:3476

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
33KB

MD5
9e335df87dca03edc149e087bfc9eccf

SHA1
d40d44af505d92edd88960dd11a0dcba845a2d0e

SHA256
da40fb78b1340e0bb8a357b09911296b29b4dd444f59e0eeac011fc9840b332f

SHA512
6bfb4783189727eec09ae1f5249f4c0de7b69faaf204a6d02e5002ea6a6b0f7d215d9413c13aa6fcd517fc094d071eae2a6956c1f89860631f56418ddc53fe39

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

Filesize
33KB

MD5
9e335df87dca03edc149e087bfc9eccf

SHA1
d40d44af505d92edd88960dd11a0dcba845a2d0e

SHA256
da40fb78b1340e0bb8a357b09911296b29b4dd444f59e0eeac011fc9840b332f

SHA512
6bfb4783189727eec09ae1f5249f4c0de7b69faaf204a6d02e5002ea6a6b0f7d215d9413c13aa6fcd517fc094d071eae2a6956c1f89860631f56418ddc53fe39

Download Submit
memory/3128-138-0x0000000000000000-mapping.dmp

Download
memory/3232-132-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/3232-133-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/3232-140-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download
memory/4380-142-0x0000000000000000-mapping.dmp

Download
memory/4880-137-0x0000000000000000-mapping.dmp

Download
memory/4880-141-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4960-134-0x0000000000000000-mapping.dmp

Download
memory/4960-139-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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