purecrypter | 709901b9f87a31d0410d37973ecf94d76cca383dbcaf4402099080738caecfee

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
21-06-2023 12:09

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General

Target

8c051812ef24f309b61efc25ec3dcbe2.exe
Size

15KB
MD5

8c051812ef24f309b61efc25ec3dcbe2
SHA1

f0087d289a5cde7b3e691f5c40e3573ef2719b46
SHA256

709901b9f87a31d0410d37973ecf94d76cca383dbcaf4402099080738caecfee
SHA512

79df9c7693fa8e22093a201581922c1099c5d1aff822dfc2b9eba49f30ee5723a71a3f099ba6bdcfb8c3fa7d6c386a610957ce98354751043de2e9a7d5dbb7a8
SSDEEP

384:u5MjRSSfunEq7uthXwQFk/3rhfewHwWAxW:cMVS8652XwQFkfrB4

Score

10^/10

purecrypter xworm downloader loader persistence rat trojan

Malware Config

Extracted

Family

purecrypter

https://mahmoodonline.com/panel/uploads/Uurvvpfbldd.pdf

Extracted

Family

xworm

Mutex

vD3U6yGoQk151blY

Attributes

install_file
USB.exe

aes.plain

Signatures

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

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-1-5-21-2178924671-3779044592-2825503497-1000\Control Panel\International\Geo\Nation	8c051812ef24f309b61efc25ec3dcbe2.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-1-5-21-2178924671-3779044592-2825503497-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\apple = "\"C:\\Users\\Admin\\AppData\\Roaming\\apple.exe\""	8c051812ef24f309b61efc25ec3dcbe2.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4712 set thread context of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4712	8c051812ef24f309b61efc25ec3dcbe2.exe
4712	8c051812ef24f309b61efc25ec3dcbe2.exe
2736	powershell.exe
2736	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4712	8c051812ef24f309b61efc25ec3dcbe2.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	1628	8c051812ef24f309b61efc25ec3dcbe2.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 4732	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	80
PID 4712 wrote to memory of 4732	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	80
PID 4712 wrote to memory of 4732	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	80
PID 4712 wrote to memory of 5048	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	82
PID 4712 wrote to memory of 5048	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	82
PID 4712 wrote to memory of 5048	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	82
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4712 wrote to memory of 1628	4712	8c051812ef24f309b61efc25ec3dcbe2.exe	83
PID 4732 wrote to memory of 2736	4732	cmd.exe	84
PID 4732 wrote to memory of 2736	4732	cmd.exe	84
PID 4732 wrote to memory of 2736	4732	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\8c051812ef24f309b61efc25ec3dcbe2.exe
"C:\Users\Admin\AppData\Local\Temp\8c051812ef24f309b61efc25ec3dcbe2.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell set-mppreference -exclusionpath C:\
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4732
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell set-mppreference -exclusionpath C:\
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2736
- C:\Users\Admin\AppData\Local\Temp\8c051812ef24f309b61efc25ec3dcbe2.exe
  C:\Users\Admin\AppData\Local\Temp\8c051812ef24f309b61efc25ec3dcbe2.exe
  2⤵
  PID:5048
- C:\Users\Admin\AppData\Local\Temp\8c051812ef24f309b61efc25ec3dcbe2.exe
  C:\Users\Admin\AppData\Local\Temp\8c051812ef24f309b61efc25ec3dcbe2.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8c051812ef24f309b61efc25ec3dcbe2.exe.log

Filesize
1KB

MD5
f3eb81974dc5933681e933f07209ff5f

SHA1
7af8cae0f1d03e82daaf784df9886705685baac7

SHA256
e82069884dd428bd6a1c67fe00c5fa56f9c4d62b538b694694a699588f1f4ab2

SHA512
d9aa3871dffb76c8a73a7940fa03bbc9b65cf575cbd07f7c1fbf490cb0f3d670415eaef0bf79e34689f61ab3cdfbb104efdef004becc12e54b501f02f948aaff

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0xignbzf.i5n.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1628-1106-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/1628-1064-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1628-1065-0x0000000005020000-0x00000000050BC000-memory.dmp

Filesize
624KB

Download
memory/1628-1084-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/2736-1085-0x0000000006EA0000-0x0000000006ED2000-memory.dmp

Filesize
200KB

Download
memory/2736-1082-0x00000000068D0000-0x00000000068EE000-memory.dmp

Filesize
120KB

Download
memory/2736-1098-0x0000000008220000-0x000000000889A000-memory.dmp

Filesize
6.5MB

Download
memory/2736-1097-0x000000007F870000-0x000000007F880000-memory.dmp

Filesize
64KB

Download
memory/2736-1096-0x0000000007AA0000-0x0000000007ABE000-memory.dmp

Filesize
120KB

Download
memory/2736-1086-0x0000000070B50000-0x0000000070B9C000-memory.dmp

Filesize
304KB

Download
memory/2736-1100-0x0000000007C50000-0x0000000007C5A000-memory.dmp

Filesize
40KB

Download
memory/2736-1101-0x0000000007E60000-0x0000000007EF6000-memory.dmp

Filesize
600KB

Download
memory/2736-1083-0x0000000002FE0000-0x0000000002FF0000-memory.dmp

Filesize
64KB

Download
memory/2736-1099-0x0000000007BE0000-0x0000000007BFA000-memory.dmp

Filesize
104KB

Download
memory/2736-1081-0x0000000002FE0000-0x0000000002FF0000-memory.dmp

Filesize
64KB

Download
memory/2736-1102-0x0000000007E10000-0x0000000007E1E000-memory.dmp

Filesize
56KB

Download
memory/2736-1071-0x0000000006250000-0x00000000062B6000-memory.dmp

Filesize
408KB

Download
memory/2736-1070-0x00000000061E0000-0x0000000006246000-memory.dmp

Filesize
408KB

Download
memory/2736-1069-0x0000000006140000-0x0000000006162000-memory.dmp

Filesize
136KB

Download
memory/2736-1068-0x0000000005B10000-0x0000000006138000-memory.dmp

Filesize
6.2MB

Download
memory/2736-1067-0x0000000002FE0000-0x0000000002FF0000-memory.dmp

Filesize
64KB

Download
memory/2736-1066-0x0000000002FA0000-0x0000000002FD6000-memory.dmp

Filesize
216KB

Download
memory/2736-1103-0x0000000007F20000-0x0000000007F3A000-memory.dmp

Filesize
104KB

Download
memory/2736-1104-0x0000000007F00000-0x0000000007F08000-memory.dmp

Filesize
32KB

Download
memory/4712-160-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-166-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-184-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-186-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-188-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-190-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-192-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-194-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-196-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-200-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-198-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-1059-0x00000000052F0000-0x00000000052F1000-memory.dmp

Filesize
4KB

Download
memory/4712-180-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-178-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-176-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-174-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-172-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-170-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-168-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-182-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-164-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-162-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-133-0x0000000000020000-0x000000000002A000-memory.dmp

Filesize
40KB

Download
memory/4712-158-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-156-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-154-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-152-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-150-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-148-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-146-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-144-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-142-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-140-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-138-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-137-0x0000000005D80000-0x0000000005E20000-memory.dmp

Filesize
640KB

Download
memory/4712-136-0x0000000005F30000-0x0000000005FC2000-memory.dmp

Filesize
584KB

Download
memory/4712-135-0x00000000063E0000-0x0000000006984000-memory.dmp

Filesize
5.6MB

Download
memory/4712-134-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

Filesize
64KB

Download