purecrypter | 6da5b50897d3a38bbd255b30d480150a4b1a3ca59650a911c85c179184e0d78e

Analysis

max time kernel
40s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/02/2023, 12:47

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ogbanseef.exe
Size

2.4MB
MD5

df95e42d4edb19dc4b94941f2b613492
SHA1

39037e64ebf0763a42ff4d0312d776d51bbbf06d
SHA256

ee116c48b8e4a3fd0e805b90b03ece7fee2e141d05a386a44bf3725b41d7a534
SHA512

0a98fbb4bfb9647ddb92c2bfea3504831d29d76274a206d07e88fe5dbf41d8544633008d5d1f2ecfb9390043e14090e1b1812bc41f2519d0d0943c8d3f0227fa
SSDEEP

49152:No981ADu1skJBigljMWzOVgEwmiJQgWW4O:N/AUzZYg8iJQw4

Score

10^/10

purecrypter downloader loader persistence

Malware Config

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/1116-55-0x0000000004A80000-0x0000000004CDC000-memory.dmp	family_purecrypter

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter

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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Eryrascyo = "\"C:\\Users\\Admin\\AppData\\Roaming\\Pqijqagie\\Eryrascyo.exe\""	ogbanseef.exe

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 11 IoCs

pid	Process
1260	powershell.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe
1116	ogbanseef.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	ogbanseef.exe
Token: SeDebugPrivilege	1260	powershell.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 1260	1116	ogbanseef.exe	26
PID 1116 wrote to memory of 1260	1116	ogbanseef.exe	26
PID 1116 wrote to memory of 1260	1116	ogbanseef.exe	26
PID 1116 wrote to memory of 1260	1116	ogbanseef.exe	26
PID 1116 wrote to memory of 908	1116	ogbanseef.exe	28
PID 1116 wrote to memory of 908	1116	ogbanseef.exe	28
PID 1116 wrote to memory of 908	1116	ogbanseef.exe	28
PID 1116 wrote to memory of 908	1116	ogbanseef.exe	28
PID 1116 wrote to memory of 904	1116	ogbanseef.exe	29
PID 1116 wrote to memory of 904	1116	ogbanseef.exe	29
PID 1116 wrote to memory of 904	1116	ogbanseef.exe	29
PID 1116 wrote to memory of 904	1116	ogbanseef.exe	29
PID 1116 wrote to memory of 580	1116	ogbanseef.exe	30
PID 1116 wrote to memory of 580	1116	ogbanseef.exe	30
PID 1116 wrote to memory of 580	1116	ogbanseef.exe	30
PID 1116 wrote to memory of 580	1116	ogbanseef.exe	30
PID 1116 wrote to memory of 764	1116	ogbanseef.exe	31
PID 1116 wrote to memory of 764	1116	ogbanseef.exe	31
PID 1116 wrote to memory of 764	1116	ogbanseef.exe	31
PID 1116 wrote to memory of 764	1116	ogbanseef.exe	31
PID 1116 wrote to memory of 768	1116	ogbanseef.exe	32
PID 1116 wrote to memory of 768	1116	ogbanseef.exe	32
PID 1116 wrote to memory of 768	1116	ogbanseef.exe	32
PID 1116 wrote to memory of 768	1116	ogbanseef.exe	32
PID 1116 wrote to memory of 460	1116	ogbanseef.exe	33
PID 1116 wrote to memory of 460	1116	ogbanseef.exe	33
PID 1116 wrote to memory of 460	1116	ogbanseef.exe	33
PID 1116 wrote to memory of 460	1116	ogbanseef.exe	33
PID 1116 wrote to memory of 660	1116	ogbanseef.exe	34
PID 1116 wrote to memory of 660	1116	ogbanseef.exe	34
PID 1116 wrote to memory of 660	1116	ogbanseef.exe	34
PID 1116 wrote to memory of 660	1116	ogbanseef.exe	34
PID 1116 wrote to memory of 576	1116	ogbanseef.exe	35
PID 1116 wrote to memory of 576	1116	ogbanseef.exe	35
PID 1116 wrote to memory of 576	1116	ogbanseef.exe	35
PID 1116 wrote to memory of 576	1116	ogbanseef.exe	35
PID 1116 wrote to memory of 824	1116	ogbanseef.exe	36
PID 1116 wrote to memory of 824	1116	ogbanseef.exe	36
PID 1116 wrote to memory of 824	1116	ogbanseef.exe	36
PID 1116 wrote to memory of 824	1116	ogbanseef.exe	36
PID 1116 wrote to memory of 1048	1116	ogbanseef.exe	37
PID 1116 wrote to memory of 1048	1116	ogbanseef.exe	37
PID 1116 wrote to memory of 1048	1116	ogbanseef.exe	37
PID 1116 wrote to memory of 1048	1116	ogbanseef.exe	37

C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
"C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116
- 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:1260
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:908
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:904
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:580
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:764
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:768
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:460
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:660
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:576
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:824
- C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  C:\Users\Admin\AppData\Local\Temp\ogbanseef.exe
  2⤵
  PID:1048

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

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1116-54-0x00000000002D0000-0x0000000000532000-memory.dmp

Filesize
2.4MB

Download
memory/1116-55-0x0000000004A80000-0x0000000004CDC000-memory.dmp

Filesize
2.4MB

Download
memory/1116-56-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1116-62-0x0000000005040000-0x000000000508C000-memory.dmp

Filesize
304KB

Download
memory/1260-59-0x000000006FE60000-0x000000007040B000-memory.dmp

Filesize
5.7MB

Download
memory/1260-60-0x000000006FE60000-0x000000007040B000-memory.dmp

Filesize
5.7MB

Download
memory/1260-61-0x000000006FE60000-0x000000007040B000-memory.dmp

Filesize
5.7MB

Download