nymaim | 8e9cc7dfb5ebc2fa8b4f6e738076bb6cb9830b118c1da38fa42b031c331c2e6b

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, 15:33

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General

Target
file.exe
Size 382KB
Sample220918-sy682abdf5
SHA256 8e9cc7dfb5ebc2fa8b4f6e738076bb6cb9830b118c1da38fa42b031c331c2e6b
MD5 cccd96c8b0745588ccf7298e4b82117d
SHA1 f08ca3deadb1f0fecffe8ae7632428678c209225
SHA512 2b6feee3ae500bccd080f5d08940fae642f23e69e46ff61c865adb90d99e45801737977e42370cb14ea6a12d106328668cc6f370112d768f42a28d76dc8a158d
SSDEEP 6144:qutR4LaroQwCBBlWqeJ4vrdI+nynFzrqVy0jvnigabwVf:qxaoQwCB9esr9yn9q9ji
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
1664	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
1904	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 456 wrote to memory of 1664	456	file.exe	30
PID 456 wrote to memory of 1664	456	file.exe	30
PID 456 wrote to memory of 1664	456	file.exe	30
PID 456 wrote to memory of 1664	456	file.exe	30
PID 1664 wrote to memory of 1904	1664	cmd.exe	32
PID 1664 wrote to memory of 1904	1664	cmd.exe	32
PID 1664 wrote to memory of 1904	1664	cmd.exe	32
PID 1664 wrote to memory of 1904	1664	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:1664
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1904

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/456-56-0x00000000003B0000-0x00000000003F2000-memory.dmp

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

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memory/456-55-0x00000000008CB000-0x00000000008F2000-memory.dmp

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memory/456-59-0x00000000008CB000-0x00000000008F2000-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

Replay Monitor

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Downloads