3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10

Analysis

max time kernel
42s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01-10-2022 23:26

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General

Target

3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe
Size

93KB
MD5

044632b9a50c97acc9e74d3f5e1eb801
SHA1

e560d1275ea235741ef43628bbca7950316024fe
SHA256

3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10
SHA512

4b1c022bb377d218a2a6f88e3e770b276d31685c61d2c95070bbfbe74963b64fd35d7bc6b22465ff8e5e2ce0f151b5db9d7f6352604ea0b2719567ae13606f9f
SSDEEP

1536:3tXEgfR+dxrrAPvCFghMO8zCThiztILprD1KdV:3tUgJoP6Cc8zEiztO16

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1772	csrss.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1772 set thread context of 1908	1772	csrss.exe	29
PID 1772 set thread context of 0	1772	csrss.exe
PID 1772 set thread context of 0	1772	csrss.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\csrss.exe	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.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: SeSystemtimePrivilege	1980	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe
Token: SeSystemtimePrivilege	1980	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1772	1980	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe	28
PID 1980 wrote to memory of 1772	1980	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe	28
PID 1980 wrote to memory of 1772	1980	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe	28
PID 1980 wrote to memory of 1772	1980	3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe	28
PID 1772 wrote to memory of 1908	1772	csrss.exe	29
PID 1772 wrote to memory of 1908	1772	csrss.exe	29
PID 1772 wrote to memory of 1908	1772	csrss.exe	29
PID 1772 wrote to memory of 1908	1772	csrss.exe	29
PID 1772 wrote to memory of 1908	1772	csrss.exe	29

C:\Users\Admin\AppData\Local\Temp\3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe
"C:\Users\Admin\AppData\Local\Temp\3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\csrss.exe
  "C:\Windows\csrss.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\SysWOW64\svchost.exe
    svchost C:\Windows\csrss.exe
    3⤵
    PID:1908

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\csrss.exe

Filesize
93KB

MD5
044632b9a50c97acc9e74d3f5e1eb801

SHA1
e560d1275ea235741ef43628bbca7950316024fe

SHA256
3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10

SHA512
4b1c022bb377d218a2a6f88e3e770b276d31685c61d2c95070bbfbe74963b64fd35d7bc6b22465ff8e5e2ce0f151b5db9d7f6352604ea0b2719567ae13606f9f

Download Submit
C:\Windows\csrss.exe

Filesize
93KB

MD5
044632b9a50c97acc9e74d3f5e1eb801

SHA1
e560d1275ea235741ef43628bbca7950316024fe

SHA256
3e4c7a58f43df5c4d178c906c0aa7af8f7313dd244bc844947989df4b3ff4e10

SHA512
4b1c022bb377d218a2a6f88e3e770b276d31685c61d2c95070bbfbe74963b64fd35d7bc6b22465ff8e5e2ce0f151b5db9d7f6352604ea0b2719567ae13606f9f

Download Submit
memory/1908-58-0x0000000013140000-0x0000000013157000-memory.dmp

Filesize
92KB

Download
memory/1908-62-0x0000000013140000-0x0000000013157000-memory.dmp

Filesize
92KB

Download
memory/1908-64-0x0000000013140000-0x0000000013157000-memory.dmp

Filesize
92KB

Download
memory/1980-54-0x0000000075981000-0x0000000075983000-memory.dmp

Filesize
8KB

Download