purecrypter | 1df95ebb57c93ce4374ff3ba6fcdad3662af67015abade8925c242a04e1b6b6c

Analysis

max time kernel
138s
max time network
155s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06/11/2024, 16:03

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General

Target
npp.8.4.1.Installer.x64.exe
Size 700.0MB
Sample241106-thc6pasmat
SHA256 d7cd49477ad1b8c676dc3507372ca774a69af98280db45a1c9ad0c5f0a4c309e
MD5 9a2c573e882d31251e1bcd07ba90585f
SHA1 d46878f2ad28df08972371a617bce73ae623523c
SHA512 40ac3d1cca6bb8eb7ccfb0d1ae0467423b0355ee5cded84b1095a284f08cecbd70325b808df933d47a7af60081470ad71ee1021e724759227379052302ff3894
SSDEEP 98304:h9eCUTzzphq1G/jxZIo0YYUOJimJJQYts5JcyTcvg6BtufkCJ:PefTzVhqpP9JvgpTcvf7ufz
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

purecrypter redline notepad_2 discovery downloader infostealer loader persistence

Malware Config

Extracted

Family

redline

Botnet

Notepad_2

194.36.177.124:39456

Attributes

auth_value
37464cc4dd294b9925a8c1092e1c72a9

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral5/memory/2164-12-0x0000000006320000-0x00000000067AA000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Purecrypter family
purecrypter
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 5 IoCs

resource	yara_rule
behavioral5/memory/2876-40-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral5/memory/2876-42-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral5/memory/2876-41-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral5/memory/2876-37-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral5/memory/2876-35-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline

Redline family
redline

Executes dropped EXE 2 IoCs

pid	Process
2164	DRIVER~1.EXE
1884	Mppzqonpp.8.4.1.installer.x64.exe

Loads dropped DLL 6 IoCs

pid	Process
2164	DRIVER~1.EXE
1884	Mppzqonpp.8.4.1.installer.x64.exe
1884	Mppzqonpp.8.4.1.installer.x64.exe
1884	Mppzqonpp.8.4.1.installer.x64.exe
1884	Mppzqonpp.8.4.1.installer.x64.exe
1884	Mppzqonpp.8.4.1.installer.x64.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	npp.8.4.1.Installer.x64.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2164 set thread context of 2876	2164	DRIVER~1.EXE	37

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Mppzqonpp.8.4.1.installer.x64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DRIVER~1.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2572	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2164	DRIVER~1.EXE
2164	DRIVER~1.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1884	Mppzqonpp.8.4.1.installer.x64.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2164	DRIVER~1.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2164	2096	npp.8.4.1.Installer.x64.exe	31
PID 2096 wrote to memory of 2164	2096	npp.8.4.1.Installer.x64.exe	31
PID 2096 wrote to memory of 2164	2096	npp.8.4.1.Installer.x64.exe	31
PID 2096 wrote to memory of 2164	2096	npp.8.4.1.Installer.x64.exe	31
PID 2164 wrote to memory of 2708	2164	DRIVER~1.EXE	32
PID 2164 wrote to memory of 2708	2164	DRIVER~1.EXE	32
PID 2164 wrote to memory of 2708	2164	DRIVER~1.EXE	32
PID 2164 wrote to memory of 2708	2164	DRIVER~1.EXE	32
PID 2708 wrote to memory of 2572	2708	cmd.exe	34
PID 2708 wrote to memory of 2572	2708	cmd.exe	34
PID 2708 wrote to memory of 2572	2708	cmd.exe	34
PID 2708 wrote to memory of 2572	2708	cmd.exe	34
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 1884	2164	DRIVER~1.EXE	36
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37
PID 2164 wrote to memory of 2876	2164	DRIVER~1.EXE	37

C:\Users\Admin\AppData\Local\Temp\npp.8.4.1.Installer.x64.exe
"C:\Users\Admin\AppData\Local\Temp\npp.8.4.1.Installer.x64.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\DRIVER~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\DRIVER~1.EXE
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout 10
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2572
- - C:\Users\Admin\AppData\Local\Temp\Mppzqonpp.8.4.1.installer.x64.exe
    "C:\Users\Admin\AppData\Local\Temp\Mppzqonpp.8.4.1.installer.x64.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    PID:1884
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

ioSpecial.ini

Path C:\Users\Admin\AppData\Local\Temp\nst7715.tmp\ioSpecial.ini
Size 1KB
SHA256 fcb670929f48856ed6fb8ae3fbd90dd296e3f71cf01b765fefce36f9c99372d9
MD5 4c2328fac017565af42cf258393e58ed
SHA1 c2cb110faf4d6366374d95814eacb0f4c467ce64
SHA512 dcef4e011790420002fe4fd78060c79d799e0dd12834cd7f38c7965a867285a4629449b968f1b2290719586bd65a5775518fcf8275e920b7b507c225d70b2ee4
MD5 SHA1 SHA512

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Mppzqonpp.8.4.1.installer.x64.exe

Path \Users\Admin\AppData\Local\Temp\Mppzqonpp.8.4.1.installer.x64.exe
Size 4.3MB
SHA256 6d80dcfdb5a979eb11de1ebbf5733a101fbe4cd8f7c1ac10f651e71fadf52e4a
MD5 542c0f910db312aa76c75d5cdbf76844
SHA1 18f608b6220c392ddde0194352b3faf7a10608d1
SHA512 087f415c20d485cc322be24ae43f730ae7edfa6f64fe78828727a8cf47a0207d18a9b45769f9f3228cd5012c7d34244ccc7edb3e93ba0cc263c4370153fe4a0d
SSDEEP 98304:ytvVHpov2guvpjBPr8psE0moExzsYpQzg5nYNv9k+v93Aam3cJvWI5b9kn:yt9Huv4pFM6UxzRQzSYNv96am3cVW0b+
MD5 SHA1 SHA512 SSDEEP

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InstallOptions.dll

Path \Users\Admin\AppData\Local\Temp\nst7715.tmp\InstallOptions.dll
Size 15KB
SHA256 c7fef6457989d97fecc0616a69947927da9d8c493f7905dc8475c748f044f3cf
MD5 ece25721125d55aa26cdfe019c871476
SHA1 b87685ae482553823bf95e73e790de48dc0c11ba
SHA512 4e384735d03c943f5eb3396bb3a9cb42c9d8a5479fe2871de5b8bc18db4bbd6e2c5f8fd71b6840512a7249e12a1c63e0e760417e4baa3dc30f51375588410480
SSDEEP 384:EXsC43tPegZ3eBaRwCPOYY7nNYXC06/Yosa:EXJTgZ3eBTCmrnNA5p
MD5 SHA1 SHA512 SSDEEP

Submit Download

LangDLL.dll

Path \Users\Admin\AppData\Local\Temp\nst7715.tmp\LangDLL.dll
Size 5KB
SHA256 18e8b40ba22c7a1687bd16e8d585380bc2773fff5002d7d67e9485fcc0c51026
MD5 68b287f4067ba013e34a1339afdb1ea8
SHA1 45ad585b3cc8e5a6af7b68f5d8269c97992130b3
SHA512 06c38bbb07fb55256f3cdc24e77b3c8f3214f25bfd140b521a39d167113bf307a7e8d24e445d510bc5e4e41d33c9173bb14e3f2a38bc29a0e3d08c1f0dca4bdb
SSDEEP 48:S46+/nTKYKxbWsptIpBtWZ0iV8jAWiAJCvxft2O2B8mFofjLl:zFuPbOBtWZBV8jAWiAJCdv2Cm0L
MD5 SHA1 SHA512 SSDEEP

Submit Download

System.dll

Path \Users\Admin\AppData\Local\Temp\nst7715.tmp\System.dll
Size 12KB
SHA256 8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 cff85c549d536f651d4fb8387f1976f2
SHA1 d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
SHA512 531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88
SSDEEP 192:Zjvco0qWTlt70m5Aj/lQ0sEWD/wtYbBHFNaDybC7y+XBz0QPi:FHQlt70mij/lQRv/9VMjzr
MD5 SHA1 SHA512 SSDEEP

Submit Download

nsDialogs.dll

Path \Users\Admin\AppData\Local\Temp\nst7715.tmp\nsDialogs.dll
Size 9KB
SHA256 56b96add1978b1abba286f7f8982b0efbe007d4a48b3ded6a4d408e01d753fe2
MD5 6c3f8c94d0727894d706940a8a980543
SHA1 0d1bcad901be377f38d579aafc0c41c0ef8dcefd
SHA512 2094f0e4bb7c806a5ff27f83a1d572a5512d979eefda3345baff27d2c89e828f68466d08c3ca250da11b01fc0407a21743037c25e94fbe688566dd7deaebd355
SSDEEP 96:o0svUu3Uy+sytcS8176b+XR8pCHFcMcxSgB5PKtAtgt+Nt+rnt3DVEB3YcNqkzfS:o0svWyNO81b8pCHFcM0PuAgkOyuIFc
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2164-11-0x0000000074D50000-0x000000007543E000-memory.dmp

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memory/2164-43-0x0000000074D50000-0x000000007543E000-memory.dmp

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memory/2164-12-0x0000000006320000-0x00000000067AA000-memory.dmp

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memory/2164-6-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

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memory/2164-10-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

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memory/2164-13-0x0000000002230000-0x000000000227C000-memory.dmp

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memory/2164-7-0x0000000000160000-0x000000000060E000-memory.dmp

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memory/2164-8-0x00000000051B0000-0x0000000005638000-memory.dmp

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memory/2164-9-0x0000000074D50000-0x000000007543E000-memory.dmp

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memory/2876-31-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/2876-37-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/2876-35-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/2876-33-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/2876-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2876-41-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/2876-42-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/2876-40-0x0000000000400000-0x0000000000420000-memory.dmp

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