purecrypter | f00982603a693995cf32649df28ac390ce839638751f04d11517454466061785

Analysis

max time kernel
151s
max time network
169s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
27/01/2023, 07:26

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General

Target

7034c12131cc2e28fcf9235850a36b08e9983dce.exe
Size

7KB
MD5

1c72fb093ace75fffb093c6541ff4940
SHA1

7034c12131cc2e28fcf9235850a36b08e9983dce
SHA256

f00982603a693995cf32649df28ac390ce839638751f04d11517454466061785
SHA512

4d713c85e2b5a818e3f5db4c7b59a820bb309c911825670b540597c9faa9d931f5648d054e19a01a48f7c97bae6dfe67b02148fb3ad58ddafdd11bb06f8a59ed
SSDEEP

96:lTlsnKYgr+QLZCMqm18WQ2juY+wq+Df/8tEkajtR/zNt:lpQELZCMqmXjuZ+z8zaj7p

Score

10^/10

purecrypter remcos 28282 collection downloader loader persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

28282

194.180.49.17:28282

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
gqhwjekrltlu-TOU33Q
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/1948-56-0x0000000006280000-0x000000000651C000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1044-90-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1044-91-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/800-88-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral1/memory/944-87-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/800-88-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1044-90-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/1044-91-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	7034c12131cc2e28fcf9235850a36b08e9983dce.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\Eesibjdz = "\"C:\\Users\\Admin\\AppData\\Roaming\\Gngrey\\Eesibjdz.exe\""	7034c12131cc2e28fcf9235850a36b08e9983dce.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1948 set thread context of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1944 set thread context of 800	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	33
PID 1944 set thread context of 1044	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	34
PID 1944 set thread context of 944	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	35

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1712	powershell.exe
800	7034c12131cc2e28fcf9235850a36b08e9983dce.exe
800	7034c12131cc2e28fcf9235850a36b08e9983dce.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe
1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe
1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe
Token: SeDebugPrivilege	1712	powershell.exe
Token: SeDebugPrivilege	944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 1712	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	28
PID 1948 wrote to memory of 1712	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	28
PID 1948 wrote to memory of 1712	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	28
PID 1948 wrote to memory of 1712	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	28
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1948 wrote to memory of 1944	1948	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	31
PID 1944 wrote to memory of 800	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	33
PID 1944 wrote to memory of 800	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	33
PID 1944 wrote to memory of 800	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	33
PID 1944 wrote to memory of 800	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	33
PID 1944 wrote to memory of 800	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	33
PID 1944 wrote to memory of 1044	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	34
PID 1944 wrote to memory of 1044	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	34
PID 1944 wrote to memory of 1044	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	34
PID 1944 wrote to memory of 1044	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	34
PID 1944 wrote to memory of 1044	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	34
PID 1944 wrote to memory of 944	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	35
PID 1944 wrote to memory of 944	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	35
PID 1944 wrote to memory of 944	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	35
PID 1944 wrote to memory of 944	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	35
PID 1944 wrote to memory of 944	1944	7034c12131cc2e28fcf9235850a36b08e9983dce.exe	35

C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
"C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948
- 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:1712
- C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
  C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1944
- - C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
    C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\figx"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:800
- - C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
    C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\pllqbyv"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1044
- - C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe
    C:\Users\Admin\AppData\Local\Temp\7034c12131cc2e28fcf9235850a36b08e9983dce.exe /stext "C:\Users\Admin\AppData\Local\Temp\afrjcrfqzyy"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:944

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\figx

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/800-88-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/944-87-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1044-91-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1044-90-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1712-59-0x000000006FB30000-0x00000000700DB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-60-0x000000006FB30000-0x00000000700DB000-memory.dmp

Filesize
5.7MB

Download
memory/1712-61-0x000000006FB30000-0x00000000700DB000-memory.dmp

Filesize
5.7MB

Download
memory/1944-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1944-97-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1944-95-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1944-96-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1944-92-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1948-55-0x00000000762F1000-0x00000000762F3000-memory.dmp

Filesize
8KB

Download
memory/1948-56-0x0000000006280000-0x000000000651C000-memory.dmp

Filesize
2.6MB

Download
memory/1948-62-0x00000000050E0000-0x0000000005160000-memory.dmp

Filesize
512KB

Download
memory/1948-54-0x00000000011F0000-0x00000000011F8000-memory.dmp

Filesize
32KB

Download