purecrypter | 0ddf7226ac77878f78a73875b0633229368d8e8c28acdd4469d65648d99adfc6

General

Target

REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe
Size

7KB
MD5

2191219c54b8ae4fd655146a479a2c8c
SHA1

54b26e2cc5328f53acf0ba5be5a8a94da1008190
SHA256

0ddf7226ac77878f78a73875b0633229368d8e8c28acdd4469d65648d99adfc6
SHA512

8b5369c976a31b9a60da34698bcced445f4d561b1908e8b7e883715aa0031e04bafd19ae24b18133bf3816802f1a4fdc90214506dcb258bcc4bdaaec9fffafbb
SSDEEP

96:U/Ef/c/7yFyZ/nOci8cN0mMiUAmBVQttEkXnLFO0bjzNt:QEfkDyFETONB1LmYtzbTR

Score

10^/10

purecrypter collection downloader evasion loader

Malware Config

Signatures

Detect PureCrypter injector 1 IoCs

loader

resource	yara_rule
behavioral1/memory/1088-56-0x0000000006370000-0x00000000065FC000-memory.dmp	family_purecrypter

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

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	REG.exe

Disables Task Manager via registry modification
evasion

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1088 set thread context of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe	MSBuild.exe

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1996	REG.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 040000000100000010000000acb694a59c17e0d791529bb19706a6e40f0000000100000014000000ce0e658aa3e847e467a147b3049191093d055e6f0b0000000100000034000000420061006c00740069006d006f007200650020004300790062006500720054007200750073007400200052006f006f007400000053000000010000002400000030223020060a2b06010401b13e01640130123010060a2b0601040182373c0101030200c0140000000100000014000000e59d5930824758ccacfa085436867b3ab5044df01d0000000100000010000000918ad43a9475f78bb5243de886d8103c09000000010000000c000000300a06082b06010505070301030000000100000014000000d4de20d05e66fc53fe1a50882c78db2852cae47419000000010000001000000068cb42b035ea773e52ef50ecf50ec52920000000010000007b030000308203773082025fa0030201020204020000b9300d06092a864886f70d0101050500305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f74301e170d3030303531323138343630305a170d3235303531323233353930305a305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f7430820122300d06092a864886f70d01010105000382010f003082010a0282010100a304bb22ab983d57e826729ab579d429e2e1e89580b1b0e35b8e2b299a64dfa15dedb009056ddb282ece62a262feb488da12eb38eb219dc0412b01527b8877d31c8fc7bab988b56a09e773e81140a7d1ccca628d2de58f0ba650d2a850c328eaf5ab25878a9a961ca967b83f0cd5f7f952132fc21bd57070f08fc012ca06cb9ae1d9ca337a77d6f8ecb9f16844424813d2c0c2a4ae5e60feb6a605fcb4dd075902d459189863f5a563e0900c7d5db2067af385eaebd403ae5e843e5fff15ed69bcf939367275cf77524df3c9902cb93de5c923533f1f2498215c079929bdc63aece76e863a6b97746333bd681831f0788d76bffc9e8e5d2a86a74d90dc271a390203010001a3453043301d0603551d0e04160414e59d5930824758ccacfa085436867b3ab5044df030120603551d130101ff040830060101ff020103300e0603551d0f0101ff040403020106300d06092a864886f70d01010505000382010100850c5d8ee46f51684205a0ddbb4f27258403bdf764fd2dd730e3a41017ebda2929b6793f76f6191323b8100af958a4d46170bd04616a128a17d50abdc5bc307cd6e90c258d86404feccca37e38c637114feddd68318e4cd2b30174eebe755e07481a7f70ff165c84c07985b805fd7fbe6511a30fc002b4f852373904d5a9317a18bfa02af41299f7a34582e33c5ef59d9eb5c89e7c2ec8a49e4e08144b6dfd706d6b1a63bd64e61fb7cef0f29f2ebb1bb7f250887392c2e2e3168d9a3202ab8e18dde91011ee7e35ab90af3e30947ad0333da7650ff5fc8e9e62cf47442c015dbb1db532d247d2382ed0fe81dc326a1eb5ee3cd5fce7811d19c32442ea6339a9	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1288	powershell.exe
1648	MSBuild.exe
1648	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe
Token: SeDebugPrivilege	1288	powershell.exe
Token: SeDebugPrivilege	1648	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1288	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	27
PID 1088 wrote to memory of 1288	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	27
PID 1088 wrote to memory of 1288	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	27
PID 1088 wrote to memory of 1288	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	27
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1088 wrote to memory of 1648	1088	REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe	29
PID 1648 wrote to memory of 1996	1648	MSBuild.exe	30
PID 1648 wrote to memory of 1996	1648	MSBuild.exe	30
PID 1648 wrote to memory of 1996	1648	MSBuild.exe	30
PID 1648 wrote to memory of 1996	1648	MSBuild.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe
"C:\Users\Admin\AppData\Local\Temp\REVİZE EDİLMİŞ TEKLİF VE SATIN ALMA EMRİ.exe"
1⤵
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088
- 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:1288
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1648
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
    3⤵
    - Disables RegEdit via registry modification
    - Modifies registry key
    PID:1996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1088-54-0x0000000001130000-0x0000000001138000-memory.dmp

Filesize
32KB

Download
memory/1088-55-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1088-56-0x0000000006370000-0x00000000065FC000-memory.dmp

Filesize
2.5MB

Download
memory/1088-62-0x00000000052A0000-0x0000000005306000-memory.dmp

Filesize
408KB

Download
memory/1288-59-0x000000006EBF0000-0x000000006F19B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-60-0x000000006EBF0000-0x000000006F19B000-memory.dmp

Filesize
5.7MB

Download
memory/1288-61-0x000000006EBF0000-0x000000006F19B000-memory.dmp

Filesize
5.7MB

Download
memory/1648-63-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1648-64-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1648-66-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1648-68-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1648-69-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1648-72-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1648-74-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads