nymaim | f03631ef2f834bf26eefde590f30ecf8ef3a759c69306d2bf1b7fc3c92a6cfeb

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
18/09/2022, 00:31

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General

Target
file.exe
Size 381KB
Sample220918-at2tmsaec3
SHA256 f03631ef2f834bf26eefde590f30ecf8ef3a759c69306d2bf1b7fc3c92a6cfeb
MD5 38e5498afc69b9ec1a07626e8c4f157e
SHA1 f89eff4a78157b1c225c5be63763c2b0c07be402
SHA512 b17c6af4bd47e6a545ef3e564a973b4a2f053f935d2827773e6319ec32f55dd3215e5e2a629ed94a54f5d43b8bfd2d8cd9b88bc5def0abfd345884f2282bb9ba
SSDEEP 6144:CNiLPzilGXHMI0SR9o/1UbH8BBGLNyFE98/3Gf8G08nigabwVf:CNirzilSMI0Td68fGLNye8/3GM8i
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Deletes itself 1 IoCs

pid	Process
1368	cmd.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1160	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 456 wrote to memory of 1368	456	file.exe	30
PID 456 wrote to memory of 1368	456	file.exe	30
PID 456 wrote to memory of 1368	456	file.exe	30
PID 456 wrote to memory of 1368	456	file.exe	30
PID 1368 wrote to memory of 1160	1368	cmd.exe	32
PID 1368 wrote to memory of 1160	1368	cmd.exe	32
PID 1368 wrote to memory of 1160	1368	cmd.exe	32
PID 1368 wrote to memory of 1160	1368	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1368
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1160

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

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Downloads

memory/456-54-0x0000000074F01000-0x0000000074F03000-memory.dmp

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memory/456-56-0x0000000000220000-0x0000000000262000-memory.dmp

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memory/456-55-0x000000000058B000-0x00000000005B2000-memory.dmp

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memory/456-57-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/456-59-0x000000000058B000-0x00000000005B2000-memory.dmp

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memory/456-60-0x0000000000400000-0x0000000000465000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads