f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429

Analysis

max time kernel
165s
max time network
181s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27/11/2022, 03:49

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General

Target

f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe
Size

21KB
MD5

2efd112c211ea56865ce29625d4ab383
SHA1

0edf48d83beee60b7099e52eb8afcf3affdfd5c1
SHA256

f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429
SHA512

04ea3721b81bdaf1e2a3b06969210b0ade2f7f9b074a03b0dcea7924afcdf739d5ef48d802ebe04bd51e5d05f997588d8a190cbbaedf3c69ea1a0e3b55b0c822
SSDEEP

384:Xpuw8n3VlF7jgr3LE78dxbS9iE1ZTkBkAnKEYVGFNs+9Xyyt:XUB3970LLDztNkArJFN9b

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2000	kemuas.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1192-54-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/1192-56-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/files/0x000a000000012687-57.dat	upx
behavioral1/files/0x000a000000012687-59.dat	upx
behavioral1/memory/2000-60-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/2000-63-0x0000000000400000-0x0000000000410000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
300	cmd.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\kemuas.exe	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe
File opened for modification	C:\Windows\kemuas.exe	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe
Token: SeIncBasePriorityPrivilege	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 300	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	29
PID 1192 wrote to memory of 300	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	29
PID 1192 wrote to memory of 300	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	29
PID 1192 wrote to memory of 300	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	29
PID 1192 wrote to memory of 1336	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	31
PID 1192 wrote to memory of 1336	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	31
PID 1192 wrote to memory of 1336	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	31
PID 1192 wrote to memory of 1336	1192	f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe	31

C:\Users\Admin\AppData\Local\Temp\f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe
"C:\Users\Admin\AppData\Local\Temp\f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F4D06D~1.EXE > nul
  2⤵
  - Deletes itself
  PID:300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F4D06D~1.EXE > nul
  2⤵
  PID:1336

C:\Windows\kemuas.exe
C:\Windows\kemuas.exe
1⤵
- Executes dropped EXE
PID:2000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\kemuas.exe

Filesize
21KB

MD5
2efd112c211ea56865ce29625d4ab383

SHA1
0edf48d83beee60b7099e52eb8afcf3affdfd5c1

SHA256
f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429

SHA512
04ea3721b81bdaf1e2a3b06969210b0ade2f7f9b074a03b0dcea7924afcdf739d5ef48d802ebe04bd51e5d05f997588d8a190cbbaedf3c69ea1a0e3b55b0c822

Download Submit
C:\Windows\kemuas.exe

Filesize
21KB

MD5
2efd112c211ea56865ce29625d4ab383

SHA1
0edf48d83beee60b7099e52eb8afcf3affdfd5c1

SHA256
f4d06dc2d3be0d81013a5a4e15461242743c34d5a66146a1debb7b320b615429

SHA512
04ea3721b81bdaf1e2a3b06969210b0ade2f7f9b074a03b0dcea7924afcdf739d5ef48d802ebe04bd51e5d05f997588d8a190cbbaedf3c69ea1a0e3b55b0c822

Download Submit
memory/1192-54-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1192-55-0x0000000075671000-0x0000000075673000-memory.dmp

Filesize
8KB

Download
memory/1192-56-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2000-60-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2000-63-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download