Malware Analysis Report

2025-08-05 21:01

Sample ID 231007-gepdbshd4v
Target 1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850
SHA256 1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850
Tags
mystic persistence stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850

Threat Level: Known bad

The file 1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850 was found to be: Known bad.

Malicious Activity Summary

mystic persistence stealer

Mystic

Detect Mystic stealer payload

Executes dropped EXE

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-07 05:43

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-07 05:43

Reported

2023-10-07 05:45

Platform

win10-20230915-en

Max time kernel

107s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe"

Signatures

Detect Mystic stealer payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Mystic

stealer mystic

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup4 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP004.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup2 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP002.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup3 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP003.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2480 set thread context of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4520 wrote to memory of 3896 N/A C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe
PID 4520 wrote to memory of 3896 N/A C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe
PID 4520 wrote to memory of 3896 N/A C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe
PID 3896 wrote to memory of 4288 N/A C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe
PID 3896 wrote to memory of 4288 N/A C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe
PID 3896 wrote to memory of 4288 N/A C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe
PID 4288 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe
PID 4288 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe
PID 4288 wrote to memory of 4256 N/A C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe
PID 4256 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe
PID 4256 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe
PID 4256 wrote to memory of 4420 N/A C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe
PID 4420 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe
PID 4420 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe
PID 4420 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
PID 2480 wrote to memory of 4480 N/A C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe

"C:\Users\Admin\AppData\Local\Temp\1265c9feb2661ff66f75d4696eade4397f9a8871b82ed6714f79003db769a850.exe"

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe

C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe

C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe

C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe

C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe

C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe

C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 588

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 568

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe

MD5 d1a7d571e01718c3ca8a5847dcc74a18
SHA1 76c6f44074922ebce33319243e91c6fe482cb5b8
SHA256 8aae25c2d677508e2d397e8bb43f76476d9084dfbd2cadf023f0c2def54ab627
SHA512 a30443a9f9511ea4f0e21065eff4037e380eeed70d7c16702b8e5ca51f1ecd171905c3e33fa57f4e3c48d83938731c0e740dce9490320893937b3b6f3b438dba

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dk4zG5MA.exe

MD5 d1a7d571e01718c3ca8a5847dcc74a18
SHA1 76c6f44074922ebce33319243e91c6fe482cb5b8
SHA256 8aae25c2d677508e2d397e8bb43f76476d9084dfbd2cadf023f0c2def54ab627
SHA512 a30443a9f9511ea4f0e21065eff4037e380eeed70d7c16702b8e5ca51f1ecd171905c3e33fa57f4e3c48d83938731c0e740dce9490320893937b3b6f3b438dba

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe

MD5 b76e5bb2b2bcb1c45f4732bae27648ce
SHA1 582205cbe1ef05c525c49d762bf9d0138d2fabd9
SHA256 aabdc92d3092215c39aff5ff3cdd7b86a2827e8ddaa5a11c8ac53332bfd6fa96
SHA512 b5df9d18ba2fd30ba47211d12d0dce5b79663415b4f67aca0faa27314ecadf9d573bb32d16f767408efe4c906890b8d240abdd415826ff5ec95d519708d01284

C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\mA2HM7os.exe

MD5 b76e5bb2b2bcb1c45f4732bae27648ce
SHA1 582205cbe1ef05c525c49d762bf9d0138d2fabd9
SHA256 aabdc92d3092215c39aff5ff3cdd7b86a2827e8ddaa5a11c8ac53332bfd6fa96
SHA512 b5df9d18ba2fd30ba47211d12d0dce5b79663415b4f67aca0faa27314ecadf9d573bb32d16f767408efe4c906890b8d240abdd415826ff5ec95d519708d01284

C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe

MD5 946af263c73122ad4ee5099272530eb8
SHA1 3f8bf4fec7400c77ff33606e8f976225f9b9652b
SHA256 f1620cc3419a4d787de01a5b658e1d4664280f8a5a75718c213915022285257b
SHA512 3d9794d39b10aa0186ab922307f3f4c2e97bfc95a4fff20587dea0e1be28f54492c4d36d7bc0ab0ca30d4717a9e3032daeec7d2694ada37586dff54c1ba43b16

C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\sL7mS2Tz.exe

MD5 946af263c73122ad4ee5099272530eb8
SHA1 3f8bf4fec7400c77ff33606e8f976225f9b9652b
SHA256 f1620cc3419a4d787de01a5b658e1d4664280f8a5a75718c213915022285257b
SHA512 3d9794d39b10aa0186ab922307f3f4c2e97bfc95a4fff20587dea0e1be28f54492c4d36d7bc0ab0ca30d4717a9e3032daeec7d2694ada37586dff54c1ba43b16

C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe

MD5 e1c9d4f85608f0e6448ed8db61a5896a
SHA1 188fc05f4c991148ea07aca59981c080004a2018
SHA256 fea82e7b3763a4a247e5d137baf84d23cfbc160bafa740755796be846b58f83d
SHA512 59c83eae8949a8346016bd510d6f3ab1fbfdd50591e516c54bec47ff2d55343a05dcc85f279cf31aabdfb4c3dbd4e157bac1d6a9b8b4454911b5f9f0b29d7b53

C:\Users\Admin\AppData\Local\Temp\IXP003.TMP\Dp5zA7vB.exe

MD5 e1c9d4f85608f0e6448ed8db61a5896a
SHA1 188fc05f4c991148ea07aca59981c080004a2018
SHA256 fea82e7b3763a4a247e5d137baf84d23cfbc160bafa740755796be846b58f83d
SHA512 59c83eae8949a8346016bd510d6f3ab1fbfdd50591e516c54bec47ff2d55343a05dcc85f279cf31aabdfb4c3dbd4e157bac1d6a9b8b4454911b5f9f0b29d7b53

C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe

MD5 f0831f173733de08511f3a0739f278a6
SHA1 06dc809d653c5d2c97386084ae13b50a73eb5b60
SHA256 8b00f9dce8ceb2123fba3bc9f88419960d1e661b6287eafeba4f0a2ee4be3d27
SHA512 19e3176ce1f154758f685cc4582e93587aa534a251de315473e35758dcd6ff6315880be7602097308dc89c355742be4729bad81de597e8d430a8e868082314e3

C:\Users\Admin\AppData\Local\Temp\IXP004.TMP\1hD41Mq6.exe

MD5 f0831f173733de08511f3a0739f278a6
SHA1 06dc809d653c5d2c97386084ae13b50a73eb5b60
SHA256 8b00f9dce8ceb2123fba3bc9f88419960d1e661b6287eafeba4f0a2ee4be3d27
SHA512 19e3176ce1f154758f685cc4582e93587aa534a251de315473e35758dcd6ff6315880be7602097308dc89c355742be4729bad81de597e8d430a8e868082314e3

memory/4480-35-0x0000000000400000-0x0000000000428000-memory.dmp

memory/4480-38-0x0000000000400000-0x0000000000428000-memory.dmp

memory/4480-39-0x0000000000400000-0x0000000000428000-memory.dmp

memory/4480-41-0x0000000000400000-0x0000000000428000-memory.dmp