nymaim | f89eeaa6aecf68d0e2e464fa2fcba98057a1cd5e96f7b586d5e3405f4006cfd2

Analysis

max time kernel
75s
max time network
77s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/10/2022, 00:10

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General

Target
file.exe
Size 397KB
Sample221007-af2xgsbdbq
SHA256 f89eeaa6aecf68d0e2e464fa2fcba98057a1cd5e96f7b586d5e3405f4006cfd2
MD5 bdd86172c42d661392145620b407985a
SHA1 df64fa9c0764e25f6e9d8f9bda7fd1c1e30ddc96
SHA512 85e9d1cde7734de3478b5faac657b237011f3a93ced796041605fb7563922534923bf94f39e35c5450279d5d46a9c7bc941343af6a5d2415e62476c7a4033e42
SSDEEP 6144:1idIET0I/87rTERXu0NixRmwB0AiFNtKzrSuzbgwuT48ZBwVfU:1EfTL87811NiuwB0AiFHYSunn840
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

Executes dropped EXE 1 IoCs

pid	Process
1664	17zphDZ5jV6j.exe

Deletes itself 1 IoCs

pid	Process
776	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2000	file.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
752	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2000	file.exe
2000	file.exe
2000	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	752	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 1664	2000	file.exe	30
PID 2000 wrote to memory of 1664	2000	file.exe	30
PID 2000 wrote to memory of 1664	2000	file.exe	30
PID 2000 wrote to memory of 1664	2000	file.exe	30
PID 2000 wrote to memory of 776	2000	file.exe	31
PID 2000 wrote to memory of 776	2000	file.exe	31
PID 2000 wrote to memory of 776	2000	file.exe	31
PID 2000 wrote to memory of 776	2000	file.exe	31
PID 776 wrote to memory of 752	776	cmd.exe	33
PID 776 wrote to memory of 752	776	cmd.exe	33
PID 776 wrote to memory of 752	776	cmd.exe	33
PID 776 wrote to memory of 752	776	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\17zphDZ5jV6j.exe
  2⤵
  - Executes dropped EXE
  PID:1664
- 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:776
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:752

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

17zphDZ5jV6j.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\17zphDZ5jV6j.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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17zphDZ5jV6j.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\17zphDZ5jV6j.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/2000-57-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/2000-54-0x0000000074F01000-0x0000000074F03000-memory.dmp

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memory/2000-61-0x000000000066B000-0x000000000069C000-memory.dmp

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memory/2000-62-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/2000-63-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2000-55-0x000000000066B000-0x000000000069C000-memory.dmp

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memory/2000-68-0x000000000066B000-0x000000000069C000-memory.dmp

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memory/2000-69-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/2000-56-0x0000000000220000-0x0000000000273000-memory.dmp

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