purecrypter | 14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb

Resubmissions

13-02-2023 08:38

230213-kj1hyaca52 10

03-02-2023 20:49

230203-zmcnlsee6w 10

Analysis

max time kernel
43s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13-02-2023 08:38

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General

Target

14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
Size

172KB
MD5

a9fe419d1a7c914e4bcb26ba2d564338
SHA1

287d701de4ece28a6b0245c89b2ea488c6fee16b
SHA256

14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb
SHA512

5ea544d93d2d19614e006f4b1762cb3e5d886e130c1fe77973cf83f2bac02dd9ea58eea0ac428e08bec65e03f1f37b41da3608f8a817d0a42dab49ee4b9f9cb9
SSDEEP

1536:v+ac9URWzKr7PhuuUpV7+5JTiy95UuUCQahsf5mZIWiwwr7QXsouW2ASDDA6rRcS:v+apWaxa7Dy956S2j4xnsvXtPdSaeW

Score

10^/10

purecrypter downloader loader persistence

Malware Config

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/816-55-0x000000001FBA0000-0x000000001FE8A000-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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\cloudapp = "\"C:\\Users\\Admin\\AppData\\Local\\WinSCP\\cloudapp.exe\""	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.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 21 IoCs

pid	Process
1276	powershell.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
Token: SeDebugPrivilege	1276	powershell.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 1276	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	27
PID 816 wrote to memory of 1276	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	27
PID 816 wrote to memory of 1276	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	27
PID 816 wrote to memory of 1188	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	29
PID 816 wrote to memory of 1188	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	29
PID 816 wrote to memory of 1188	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	29
PID 816 wrote to memory of 772	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	30
PID 816 wrote to memory of 772	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	30
PID 816 wrote to memory of 772	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	30
PID 816 wrote to memory of 1072	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	31
PID 816 wrote to memory of 1072	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	31
PID 816 wrote to memory of 1072	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	31
PID 816 wrote to memory of 392	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	32
PID 816 wrote to memory of 392	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	32
PID 816 wrote to memory of 392	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	32
PID 816 wrote to memory of 276	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	33
PID 816 wrote to memory of 276	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	33
PID 816 wrote to memory of 276	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	33
PID 816 wrote to memory of 868	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	34
PID 816 wrote to memory of 868	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	34
PID 816 wrote to memory of 868	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	34
PID 816 wrote to memory of 324	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	35
PID 816 wrote to memory of 324	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	35
PID 816 wrote to memory of 324	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	35
PID 816 wrote to memory of 792	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	36
PID 816 wrote to memory of 792	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	36
PID 816 wrote to memory of 792	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	36
PID 816 wrote to memory of 1784	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	37
PID 816 wrote to memory of 1784	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	37
PID 816 wrote to memory of 1784	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	37
PID 816 wrote to memory of 1312	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	38
PID 816 wrote to memory of 1312	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	38
PID 816 wrote to memory of 1312	816	14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe	38

C:\Users\Admin\AppData\Local\Temp\14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe
"C:\Users\Admin\AppData\Local\Temp\14d6746a7475a0f8cd26d1d30403688e8d36cdc3f093e159f5882dc614a0cccb.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:816
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1276
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:1188
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:772
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:1072
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:392
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:276
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:868
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:324
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:792
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:1784
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
  2⤵
  PID:1312

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

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Downloads

memory/816-60-0x000000001AC57000-0x000000001AC76000-memory.dmp

Filesize
124KB

Download
memory/816-55-0x000000001FBA0000-0x000000001FE8A000-memory.dmp

Filesize
2.9MB

Download
memory/816-66-0x000000001AC57000-0x000000001AC76000-memory.dmp

Filesize
124KB

Download
memory/816-54-0x000000013FC40000-0x000000013FC6E000-memory.dmp

Filesize
184KB

Download
memory/816-65-0x000000001D260000-0x000000001D31C000-memory.dmp

Filesize
752KB

Download
memory/1276-57-0x000007FEFB731000-0x000007FEFB733000-memory.dmp

Filesize
8KB

Download
memory/1276-61-0x00000000024F4000-0x00000000024F7000-memory.dmp

Filesize
12KB

Download
memory/1276-59-0x000007FEEAED0000-0x000007FEEBA2D000-memory.dmp

Filesize
11.4MB

Download
memory/1276-62-0x00000000024FB000-0x000000000251A000-memory.dmp

Filesize
124KB

Download
memory/1276-63-0x00000000024F4000-0x00000000024F7000-memory.dmp

Filesize
12KB

Download
memory/1276-64-0x00000000024FB000-0x000000000251A000-memory.dmp

Filesize
124KB

Download
memory/1276-58-0x000007FEEBA30000-0x000007FEEC453000-memory.dmp

Filesize
10.1MB

Download