7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117

General

Target

7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe
Size

188KB
MD5

a82e96c0fa347c803e4a2e5d95f81340
SHA1

9917bf4ebd86a163d9b63e3761bab9264f8e1d89
SHA256

7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117
SHA512

e5fcd6cd5876dc93786a6c0b5f855381194795ccb5a990649e3564c5a7b01477716ef1dd0348c81e0bcf361efbfee2d89098eaeb1eb0980f5cb8e7b2b4d5e347

Score

9^/10

evasion persistence ransomware trojan

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ynoskvtj = "\"C:\\Windows\\yfaditan.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe

description	pid	process	target process
PID 740 set thread context of 3264	740	7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\yfaditan.exe explorer.exe
File created C:\Windows\yfaditan.exe explorer.exe
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

2964 vssadmin.exe

description	ioc	process
File opened for modification	C:\Windows\yfaditan.exe	explorer.exe
File created	C:\Windows\yfaditan.exe	explorer.exe

pid	process
2964	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 156 vssvc.exe
Token: SeRestorePrivilege 156 vssvc.exe
Token: SeAuditPrivilege 156 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	156	vssvc.exe
Token: SeRestorePrivilege	156	vssvc.exe
Token: SeAuditPrivilege	156	vssvc.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exeexplorer.exe

description	pid	process	target process
PID 740 wrote to memory of 3264	740	7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe	explorer.exe
PID 740 wrote to memory of 3264	740	7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe	explorer.exe
PID 740 wrote to memory of 3264	740	7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe	explorer.exe
PID 740 wrote to memory of 3264	740	7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe	explorer.exe
PID 3264 wrote to memory of 2964	3264	explorer.exe	vssadmin.exe
PID 3264 wrote to memory of 2964	3264	explorer.exe	vssadmin.exe
PID 3264 wrote to memory of 2964	3264	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe
"C:\Users\Admin\AppData\Local\Temp\7e2a27c681b7c250728c380c6e10f93bb24ea32e520950c72c99e6e1a1e1e117.sample.exe"
1⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\system32\explorer.exe"
2⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer Phishing Filter
- Suspicious use of WriteProcessMemory
PID:3264

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:2964

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:156

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\avinecuryladypom\01000000
MD5
8a0a56cdd9398f9375d9d1f3f0767a99

SHA1
c30e29a4751fada11d360b2485ad769afa60ee6d

SHA256
83dd9d0f98bb01d2552ace5da7a950b0d308fdf99dcb49a850ac7acd071e40db

SHA512
4ff24f45d996f478cef1d271a13e974927512f16d2d917c735e305834bc32195ed1bc5cf5dd198fc160f29cc4ce4e2b6204869479c6584c5623fac6c560d2a5a

Download Submit
memory/2964-117-0x0000000000000000-mapping.dmp

Download
memory/3264-114-0x0000000000560000-0x0000000000598000-memory.dmp

Filesize
224KB

Download
memory/3264-115-0x000000000057A620-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads