696ac8856cfd21ee8d292a1540be046dc6a9c47864c68ef95a0a9b237fc358a9

Analysis

max time kernel
119s
max time network
16s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
01-08-2024 21:31

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General

Target

05d25579a65b40db44e4a29a5d4c5f80N.exe
Size

932KB
MD5

05d25579a65b40db44e4a29a5d4c5f80
SHA1

55459850f8ebdadc86d7694db9d99ca55c60e210
SHA256

696ac8856cfd21ee8d292a1540be046dc6a9c47864c68ef95a0a9b237fc358a9
SHA512

6fee6f636ed6b90b40ab48858c4d34d9a6067ee208c6d4510f6000bf8ea229a9614a52563941a64914be0c1f52ed7b2c515db7f328f258618c0169dfad40eb36
SSDEEP

24576:71/aGLDCM4D8ayGMZo8/dXpPUA9aD1qGel:0D8ayGMZoKx19rGel

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2776	ryvekv.exe

Loads dropped DLL 2 IoCs

pid	Process
2788	05d25579a65b40db44e4a29a5d4c5f80N.exe
2788	05d25579a65b40db44e4a29a5d4c5f80N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft® Windows® Operating System = "C:\\ProgramData\\ryvekv.exe"	ryvekv.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	05d25579a65b40db44e4a29a5d4c5f80N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ryvekv.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2776	2788	05d25579a65b40db44e4a29a5d4c5f80N.exe	31
PID 2788 wrote to memory of 2776	2788	05d25579a65b40db44e4a29a5d4c5f80N.exe	31
PID 2788 wrote to memory of 2776	2788	05d25579a65b40db44e4a29a5d4c5f80N.exe	31
PID 2788 wrote to memory of 2776	2788	05d25579a65b40db44e4a29a5d4c5f80N.exe	31

C:\Users\Admin\AppData\Local\Temp\05d25579a65b40db44e4a29a5d4c5f80N.exe
"C:\Users\Admin\AppData\Local\Temp\05d25579a65b40db44e4a29a5d4c5f80N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\ProgramData\ryvekv.exe
  "C:\ProgramData\ryvekv.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Documents and Settings .exe

Filesize
932KB

MD5
a24b0e5c982fec68a0e2f1d009808899

SHA1
614b7e8b61cddbbf8dc5bab0288085310e8d47b4

SHA256
7a11dc206081c08ca94df4a7616868de39b315dd78780c73b8deb20a9ce02ac8

SHA512
6d0a006ececfe950353d70786325cb4949fd2cc14b5475493fe9edab3759446dedafe5c7c6cf3868a6fa38346ae6cbf5559d2249b90a4f36870a4035d958a348

Download Submit
C:\ProgramData\Saaaalamm\Mira.h

Filesize
477KB

MD5
71e38cb8371fa644436922e0eee6040d

SHA1
6e9e897cb95fd8434891e87a584f5f1b9482cae2

SHA256
2c97f31658ca63791439d384a5c4488bdca89adac6c363c2cc97e5763af30db4

SHA512
852954de6ce9732c6533d475ebd22f308c5659690d5197dd5865cde0ef740b40f380035baf8d9e6e38dc0541b5f16ffb01ea1560cbb89528ec4b2214c7fcc3be

Download Submit
\ProgramData\ryvekv.exe

Filesize
454KB

MD5
c3309b70fa11e5277b9e912ffd032d18

SHA1
30e3ef7543a02c2169a7baec326f6c2a405f1dd2

SHA256
3e13f5ec8d65be681a1c7fe9be01a590481953ca427ad3c2833b405da78962ff

SHA512
e8cb700d371c7e04bc9c5161f7e5bf5e4512f6fa4b3fccf7f6ff887f0894afc6dc0eff310f3b78314f4bec8a3203cb6075e665225a59b2b66191ad7ce5db1885

Download Submit
memory/2776-133-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2788-0-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2788-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads