nymaim | b6f4bcd06f4d8a9f7e45c763fc7cad24e3b4c7677f7e6a39dfed6962ef7956a1

Analysis

max time kernel
52s
max time network
54s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/10/2022, 04:14

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 396KB
Sample221007-etndgabef8
SHA256 b6f4bcd06f4d8a9f7e45c763fc7cad24e3b4c7677f7e6a39dfed6962ef7956a1
MD5 10335b701914e3a64db2c1d880d59305
SHA1 0473c3377cf8f71ebc74595477f992ce5658bd85
SHA512 0884f3935ecd91ad5fba6285994114e16ec56eb9fc6e6f277919e88334431ef7abb34df33cde0465c4b7840b135f9cd1df10fb63877f7c0fcc4e57945aec18df
SSDEEP 6144:V60AlFk5PN2j4zebWvc/9RyoT3TokNkxiit5Ruzbgwu8wVfU:V9WjczeF/9TTg7t5RunnH
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
1788	dfrFfuV.exe

Deletes itself 1 IoCs

pid	Process
1300	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1076	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
432	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1076	file.exe
1076	file.exe
1076	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1076 wrote to memory of 1788	1076	file.exe	30
PID 1076 wrote to memory of 1788	1076	file.exe	30
PID 1076 wrote to memory of 1788	1076	file.exe	30
PID 1076 wrote to memory of 1788	1076	file.exe	30
PID 1076 wrote to memory of 1300	1076	file.exe	31
PID 1076 wrote to memory of 1300	1076	file.exe	31
PID 1076 wrote to memory of 1300	1076	file.exe	31
PID 1076 wrote to memory of 1300	1076	file.exe	31
PID 1300 wrote to memory of 432	1300	cmd.exe	33
PID 1300 wrote to memory of 432	1300	cmd.exe	33
PID 1300 wrote to memory of 432	1300	cmd.exe	33
PID 1300 wrote to memory of 432	1300	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:1076
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dfrFfuV.exe
  2⤵
  - Executes dropped EXE
  PID:1788
- 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:1300
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:432

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

Loading Replay Monitor...

Downloads

dfrFfuV.exe

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

Submit Download

dfrFfuV.exe

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

Submit Download

memory/1076-55-0x000000000059B000-0x00000000005CC000-memory.dmp

Download

memory/1076-54-0x0000000075C51000-0x0000000075C53000-memory.dmp

Download

memory/1076-57-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/1076-61-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/1076-65-0x000000000059B000-0x00000000005CC000-memory.dmp

Download

memory/1076-66-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/1076-68-0x000000000059B000-0x00000000005CC000-memory.dmp

Download

memory/1076-69-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/1076-56-0x0000000000260000-0x00000000002B3000-memory.dmp

Download