purecrypter | d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36

Analysis

max time kernel
151s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06-02-2023 07:14

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General

Target

d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
Size

105KB
MD5

a6d97b5c9d9a4932b5c6c7457bc8c60e
SHA1

7afa706e0ad9c9be82711b1b2c1e113534da70c5
SHA256

d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36
SHA512

aa14f821365c6fbe6e7cb1fbae28d59ae879e90d7e6143356b0d8db3fc129ca1486e7ba9973a394d444a51a47fe80e4bd15082506761d7401d4c4ac977800196
SSDEEP

1536:FPRNkYJTrgdiPluOcN6IBVEqp+xJHWe2zm4uz5dh3Hkq4/T6dcE1sgxcirUt:FPR9ttcQIToHWef4u136E6gxcirUt

Score

10^/10

purecrypter smokeloader backdoor collection downloader loader trojan

Malware Config

Extracted

Family

purecrypter

http://modeloartesanatos.com.br/wp-admin/images/Zqchb.bmp

Signatures

Detects Smokeloader packer 3 IoCs

resource	yara_rule
behavioral2/memory/2260-143-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2260-144-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader
behavioral2/memory/2260-145-0x0000000000400000-0x0000000000409000-memory.dmp	family_smokeloader

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe

Executes dropped EXE 1 IoCs

pid	Process
4992	9FAB.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2160 set thread context of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2164	4992	WerFault.exe	91

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3064	powershell.exe
3064	powershell.exe
2260	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
2260	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2680	Process not Found

Suspicious behavior: MapViewOfSection 13 IoCs

pid	Process
2260	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found
2680	Process not Found

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	4992	9FAB.exe
Token: SeShutdownPrivilege	2680	Process not Found
Token: SeCreatePagefilePrivilege	2680	Process not Found

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 3064	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	81
PID 2160 wrote to memory of 3064	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	81
PID 2160 wrote to memory of 3064	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	81
PID 2160 wrote to memory of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83
PID 2160 wrote to memory of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83
PID 2160 wrote to memory of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83
PID 2160 wrote to memory of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83
PID 2160 wrote to memory of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83
PID 2160 wrote to memory of 2260	2160	d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe	83
PID 2680 wrote to memory of 4992	2680	Process not Found	91
PID 2680 wrote to memory of 4992	2680	Process not Found	91
PID 2680 wrote to memory of 4992	2680	Process not Found	91
PID 2680 wrote to memory of 1772	2680	Process not Found	92
PID 2680 wrote to memory of 1772	2680	Process not Found	92
PID 2680 wrote to memory of 1772	2680	Process not Found	92
PID 2680 wrote to memory of 1772	2680	Process not Found	92
PID 2680 wrote to memory of 3596	2680	Process not Found	93
PID 2680 wrote to memory of 3596	2680	Process not Found	93
PID 2680 wrote to memory of 3596	2680	Process not Found	93
PID 2680 wrote to memory of 1864	2680	Process not Found	94
PID 2680 wrote to memory of 1864	2680	Process not Found	94
PID 2680 wrote to memory of 1864	2680	Process not Found	94
PID 2680 wrote to memory of 1864	2680	Process not Found	94
PID 2680 wrote to memory of 4312	2680	Process not Found	98
PID 2680 wrote to memory of 4312	2680	Process not Found	98
PID 2680 wrote to memory of 4312	2680	Process not Found	98
PID 2680 wrote to memory of 1788	2680	Process not Found	99
PID 2680 wrote to memory of 1788	2680	Process not Found	99
PID 2680 wrote to memory of 1788	2680	Process not Found	99
PID 2680 wrote to memory of 1788	2680	Process not Found	99
PID 2680 wrote to memory of 2836	2680	Process not Found	100
PID 2680 wrote to memory of 2836	2680	Process not Found	100
PID 2680 wrote to memory of 2836	2680	Process not Found	100

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	explorer.exe

C:\Users\Admin\AppData\Local\Temp\d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
"C:\Users\Admin\AppData\Local\Temp\d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- C:\Users\Admin\AppData\Local\Temp\d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
  C:\Users\Admin\AppData\Local\Temp\d0a4e0e3ed54a45113962e05be0fecc8143c3484fbcbb3c890d8ea41f7586e36.exe
  2⤵
  - Checks SCSI registry key(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  PID:2260

C:\Users\Admin\AppData\Local\Temp\9FAB.exe
C:\Users\Admin\AppData\Local\Temp\9FAB.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 1688
  2⤵
  - Program crash
  PID:2164

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
PID:1772

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:3596

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:1864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4992 -ip 4992
1⤵
PID:2104

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:4312

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
1⤵
PID:1788

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
PID:2836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\9FAB.exe

Filesize
24KB

MD5
7d046ce10b24412f4506c433cfe0747d

SHA1
5a96afd11e493c5eddd1f335e7228868d666c787

SHA256
abccee4556d532981bd1a3a36b92e9563c880eb93517ba677417741dbafe302a

SHA512
03e78a3113526b6fd29e8379390c01b0fd6407aa55b96ffce331b2da780305bc43710a92649b3db617d2a26186db663f2816f8e47bb3955257625971d751d4f9

Download Submit
C:\Users\Admin\AppData\Local\Temp\9FAB.exe

Filesize
24KB

MD5
7d046ce10b24412f4506c433cfe0747d

SHA1
5a96afd11e493c5eddd1f335e7228868d666c787

SHA256
abccee4556d532981bd1a3a36b92e9563c880eb93517ba677417741dbafe302a

SHA512
03e78a3113526b6fd29e8379390c01b0fd6407aa55b96ffce331b2da780305bc43710a92649b3db617d2a26186db663f2816f8e47bb3955257625971d751d4f9

Download Submit
memory/1772-155-0x0000000000490000-0x00000000004FB000-memory.dmp

Filesize
428KB

Download
memory/1772-152-0x0000000000490000-0x00000000004FB000-memory.dmp

Filesize
428KB

Download
memory/1772-151-0x0000000000500000-0x0000000000575000-memory.dmp

Filesize
468KB

Download
memory/1788-170-0x0000000000820000-0x0000000000825000-memory.dmp

Filesize
20KB

Download
memory/1788-164-0x0000000000810000-0x0000000000819000-memory.dmp

Filesize
36KB

Download
memory/1788-163-0x0000000000820000-0x0000000000825000-memory.dmp

Filesize
20KB

Download
memory/1864-168-0x00000000006C0000-0x00000000006C7000-memory.dmp

Filesize
28KB

Download
memory/1864-158-0x00000000006B0000-0x00000000006BB000-memory.dmp

Filesize
44KB

Download
memory/1864-157-0x00000000006C0000-0x00000000006C7000-memory.dmp

Filesize
28KB

Download
memory/2160-133-0x0000000006990000-0x00000000069B2000-memory.dmp

Filesize
136KB

Download
memory/2160-132-0x0000000000C50000-0x0000000000C70000-memory.dmp

Filesize
128KB

Download
memory/2260-145-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2260-143-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2260-144-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2836-171-0x0000000000DD0000-0x0000000000DD6000-memory.dmp

Filesize
24KB

Download
memory/2836-166-0x0000000000DD0000-0x0000000000DD6000-memory.dmp

Filesize
24KB

Download
memory/2836-167-0x0000000000DC0000-0x0000000000DCC000-memory.dmp

Filesize
48KB

Download
memory/3064-135-0x0000000002B60000-0x0000000002B96000-memory.dmp

Filesize
216KB

Download
memory/3064-141-0x0000000006610000-0x000000000662A000-memory.dmp

Filesize
104KB

Download
memory/3064-139-0x0000000006110000-0x000000000612E000-memory.dmp

Filesize
120KB

Download
memory/3064-140-0x0000000007960000-0x0000000007FDA000-memory.dmp

Filesize
6.5MB

Download
memory/3064-138-0x0000000005AB0000-0x0000000005B16000-memory.dmp

Filesize
408KB

Download
memory/3064-136-0x00000000052F0000-0x0000000005918000-memory.dmp

Filesize
6.2MB

Download
memory/3064-137-0x0000000005A40000-0x0000000005AA6000-memory.dmp

Filesize
408KB

Download
memory/3596-154-0x00000000006E0000-0x00000000006EC000-memory.dmp

Filesize
48KB

Download
memory/4312-161-0x0000000000A30000-0x0000000000A3F000-memory.dmp

Filesize
60KB

Download
memory/4312-160-0x0000000000A40000-0x0000000000A49000-memory.dmp

Filesize
36KB

Download
memory/4312-169-0x0000000000A40000-0x0000000000A49000-memory.dmp

Filesize
36KB

Download
memory/4992-149-0x00000000007D0000-0x00000000007DC000-memory.dmp

Filesize
48KB

Download