e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62

Analysis

max time kernel
152s
max time network
159s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 12:39

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General

Target

e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe
Size

45KB
MD5

f80059deab904f5f10db1f2f8f9c1138
SHA1

072bd4170ff70712840d8bd2285bef7efce50c6c
SHA256

e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62
SHA512

d4cda96d41c5db3f210e54b2f8d5acd73e6f07507cde432d9b56877525a25860c0d16d224d7a1c9b6e0dbe1eaa9e85070bdc327a87fae6954fb8b42602b0bab4
SSDEEP

768:N64YOxhAOQ1a6fqF7ldBTOHlwmOhnYsFhJcyH:4aX6fktOH/BsXJcyH

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1176	rcflye.exe

Deletes itself 1 IoCs

pid	Process
1072	cmd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rcflye.exe	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe
File opened for modification	C:\Windows\SysWOW64\rcflye.exe	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rcflye.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rcflye.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1872	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 1072	1872	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe	28
PID 1872 wrote to memory of 1072	1872	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe	28
PID 1872 wrote to memory of 1072	1872	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe	28
PID 1872 wrote to memory of 1072	1872	e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe	28

C:\Users\Admin\AppData\Local\Temp\e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe
"C:\Users\Admin\AppData\Local\Temp\e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\E9ED83~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1072

C:\Windows\SysWOW64\rcflye.exe
C:\Windows\SysWOW64\rcflye.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1176

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rcflye.exe

Filesize
45KB

MD5
f80059deab904f5f10db1f2f8f9c1138

SHA1
072bd4170ff70712840d8bd2285bef7efce50c6c

SHA256
e9ed83596fa17085360161ba9bda435592d14ab19c5b9abaa0cd9e9b38cf2f62

SHA512
d4cda96d41c5db3f210e54b2f8d5acd73e6f07507cde432d9b56877525a25860c0d16d224d7a1c9b6e0dbe1eaa9e85070bdc327a87fae6954fb8b42602b0bab4

Download Submit
memory/1872-54-0x0000000075841000-0x0000000075843000-memory.dmp

Filesize
8KB

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