teslacrypt | 7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698

General

Target

7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe
Size

424KB
MD5

42ff22493f094600f2daa6a2984861a3
SHA1

f992b95f7330bcd6416df64b24267cf979b7a151
SHA256

7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698
SHA512

49626857c01ac1122c19308d3584eac685c4093063f540fe7974427b602a71e7fd23046d3a281671c17b0425fe4e777747154696e99129dd153c703897345267
SSDEEP

12288:iL2WjWgDhrhjxaRaDz7z4HMLzskGWoXblCJxfS6:iDXpVx7f7dLoMorOR1

Score

10^/10

teslacrypt persistence ransomware

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2891029575-1462575-1165213807-1000\_RECoVERY_+fmfxa.txt

Family

teslacrypt

Ransom Note

NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with AES More information about the encryption keys using AES can be found here: http://en.wikipedia.org/wiki/AES How did this happen ? !!! Specially for your PC was generated personal AES KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://yyre45dbvn2nhbefbmh.begumvelic.at/BF77228D1B30C7DA 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/BF77228D1B30C7DA 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BF77228D1B30C7DA If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser 3. Type in the address bar: xlowfznrg4wf7dli.onion/BF77228D1B30C7DA 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/BF77228D1B30C7DA http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/BF77228D1B30C7DA http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BF77228D1B30C7DA *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/BF77228D1B30C7DA

URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/BF77228D1B30C7DA

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/BF77228D1B30C7DA

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/BF77228D1B30C7DA

http://xlowfznrg4wf7dli.ONION/BF77228D1B30C7DA

Signatures

TeslaCrypt, AlphaCrypt
Ransomware based on CryptoLocker. Shut down by the developers in 2016.
ransomware teslacrypt
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Executes dropped EXE 1 IoCs

Processes:

xcsiavxmilce.exe

pid process

4468 xcsiavxmilce.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exexcsiavxmilce.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	xcsiavxmilce.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

xcsiavxmilce.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run	xcsiavxmilce.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ghsuudsttdra = "C:\\Windows\\system32\\cmd.exe /c start \"\" \"C:\\Windows\\xcsiavxmilce.exe\""	xcsiavxmilce.exe

Drops file in Program Files directory 46 IoCs

Processes:

xcsiavxmilce.exe

description	ioc	process
File opened for modification	C:\Program Files\7-Zip\Lang\ja.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kaa.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\af.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\az.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ba.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fr.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ga.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\io.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gl.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ka.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bg.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\de.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\es.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fi.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fur.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fy.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ar.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\br.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gu.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\it.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\an.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ast.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bn.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\co.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cs.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\he.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\el.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\et.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hy.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ko.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cy.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hu.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\is.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eo.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eu.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ext.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fa.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hi.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\be.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ca.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\da.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hr.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\id.txt	xcsiavxmilce.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kab.txt	xcsiavxmilce.exe

Drops file in Windows directory 2 IoCs

Processes:

7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe

description	ioc	process
File created	C:\Windows\xcsiavxmilce.exe	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe
File opened for modification	C:\Windows\xcsiavxmilce.exe	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.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 26 IoCs

Processes:

xcsiavxmilce.exe

pid	process
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe
4468	xcsiavxmilce.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

Processes:

7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exexcsiavxmilce.exeWMIC.exevssvc.exe

description	pid	process
Token: SeDebugPrivilege	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe
Token: SeDebugPrivilege	4468	xcsiavxmilce.exe
Token: SeIncreaseQuotaPrivilege	4180	WMIC.exe
Token: SeSecurityPrivilege	4180	WMIC.exe
Token: SeTakeOwnershipPrivilege	4180	WMIC.exe
Token: SeLoadDriverPrivilege	4180	WMIC.exe
Token: SeSystemProfilePrivilege	4180	WMIC.exe
Token: SeSystemtimePrivilege	4180	WMIC.exe
Token: SeProfSingleProcessPrivilege	4180	WMIC.exe
Token: SeIncBasePriorityPrivilege	4180	WMIC.exe
Token: SeCreatePagefilePrivilege	4180	WMIC.exe
Token: SeBackupPrivilege	4180	WMIC.exe
Token: SeRestorePrivilege	4180	WMIC.exe
Token: SeShutdownPrivilege	4180	WMIC.exe
Token: SeDebugPrivilege	4180	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4180	WMIC.exe
Token: SeRemoteShutdownPrivilege	4180	WMIC.exe
Token: SeUndockPrivilege	4180	WMIC.exe
Token: SeManageVolumePrivilege	4180	WMIC.exe
Token: 33	4180	WMIC.exe
Token: 34	4180	WMIC.exe
Token: 35	4180	WMIC.exe
Token: 36	4180	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4180	WMIC.exe
Token: SeSecurityPrivilege	4180	WMIC.exe
Token: SeTakeOwnershipPrivilege	4180	WMIC.exe
Token: SeLoadDriverPrivilege	4180	WMIC.exe
Token: SeSystemProfilePrivilege	4180	WMIC.exe
Token: SeSystemtimePrivilege	4180	WMIC.exe
Token: SeProfSingleProcessPrivilege	4180	WMIC.exe
Token: SeIncBasePriorityPrivilege	4180	WMIC.exe
Token: SeCreatePagefilePrivilege	4180	WMIC.exe
Token: SeBackupPrivilege	4180	WMIC.exe
Token: SeRestorePrivilege	4180	WMIC.exe
Token: SeShutdownPrivilege	4180	WMIC.exe
Token: SeDebugPrivilege	4180	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4180	WMIC.exe
Token: SeRemoteShutdownPrivilege	4180	WMIC.exe
Token: SeUndockPrivilege	4180	WMIC.exe
Token: SeManageVolumePrivilege	4180	WMIC.exe
Token: 33	4180	WMIC.exe
Token: 34	4180	WMIC.exe
Token: 35	4180	WMIC.exe
Token: 36	4180	WMIC.exe
Token: SeBackupPrivilege	4836	vssvc.exe
Token: SeRestorePrivilege	4836	vssvc.exe
Token: SeAuditPrivilege	4836	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exexcsiavxmilce.exe

description	pid	process	target process
PID 1200 wrote to memory of 4468	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe	xcsiavxmilce.exe
PID 1200 wrote to memory of 4468	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe	xcsiavxmilce.exe
PID 1200 wrote to memory of 4468	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe	xcsiavxmilce.exe
PID 1200 wrote to memory of 1448	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe	cmd.exe
PID 1200 wrote to memory of 1448	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe	cmd.exe
PID 1200 wrote to memory of 1448	1200	7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe	cmd.exe
PID 4468 wrote to memory of 4180	4468	xcsiavxmilce.exe	WMIC.exe
PID 4468 wrote to memory of 4180	4468	xcsiavxmilce.exe	WMIC.exe

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

xcsiavxmilce.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	xcsiavxmilce.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	xcsiavxmilce.exe

C:\Users\Admin\AppData\Local\Temp\7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe
"C:\Users\Admin\AppData\Local\Temp\7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\xcsiavxmilce.exe
  C:\Windows\xcsiavxmilce.exe
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:4468
- - C:\Windows\System32\wbem\WMIC.exe
    "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4180
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\7BCE43~1.EXE
  2⤵
  PID:1448

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

1

T1490

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Downloads

C:\Windows\xcsiavxmilce.exe

Filesize
424KB

MD5
42ff22493f094600f2daa6a2984861a3

SHA1
f992b95f7330bcd6416df64b24267cf979b7a151

SHA256
7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698

SHA512
49626857c01ac1122c19308d3584eac685c4093063f540fe7974427b602a71e7fd23046d3a281671c17b0425fe4e777747154696e99129dd153c703897345267

Download Submit
C:\Windows\xcsiavxmilce.exe

Filesize
424KB

MD5
42ff22493f094600f2daa6a2984861a3

SHA1
f992b95f7330bcd6416df64b24267cf979b7a151

SHA256
7bce43bdf63001d494253e9f3ba29134917a44233c339eb5eb872c92190bb698

SHA512
49626857c01ac1122c19308d3584eac685c4093063f540fe7974427b602a71e7fd23046d3a281671c17b0425fe4e777747154696e99129dd153c703897345267

Download Submit
memory/1200-132-0x0000000002250000-0x00000000022D5000-memory.dmp

Filesize
532KB

Download
memory/1200-133-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download
memory/1200-141-0x0000000002250000-0x00000000022D5000-memory.dmp

Filesize
532KB

Download
memory/1448-140-0x0000000000000000-mapping.dmp

Download
memory/4180-147-0x0000000000000000-mapping.dmp

Download
memory/4468-137-0x0000000000000000-mapping.dmp

Download
memory/4468-146-0x00000000021B0000-0x0000000002235000-memory.dmp

Filesize
532KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads