nymaim | 2db3251d95cb2b7d3e6b4db0649670f92724772bd7d5ff5e9b2edf7c103cddf6

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26/08/2022, 10:26

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General

Target
file.exe
Size 406KB
Sample220826-mghlfsbahn
SHA256 2db3251d95cb2b7d3e6b4db0649670f92724772bd7d5ff5e9b2edf7c103cddf6
MD5 74ef8ca778b5dfdf7578e6a961c03309
SHA1 730bf4100af5ca095da7da62a55746d6c0c3f376
SHA512 7a3af4d224628dd19507810c1e2caee27896b720c902f0352672132455f4a065066827794c060f5542943cbb5eded7764d4c6a24cbb4f24489195eff45cf4962
SSDEEP 12288:PkL4yonILgk/amGnqjBtpEf2OSqCzUlyfwpSEFT:c7mMTaaHOZEUl2wpSUT
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
4580	4708	WerFault.exe	82
4760	4708	WerFault.exe	82
4228	4708	WerFault.exe	82
1344	4708	WerFault.exe	82
4216	4708	WerFault.exe	82
1108	4708	WerFault.exe	82
4552	4708	WerFault.exe	82
4212	4708	WerFault.exe	82
2304	4708	WerFault.exe	82
5108	4708	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
4152	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4152	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 3736	4708	file.exe	102
PID 4708 wrote to memory of 3736	4708	file.exe	102
PID 4708 wrote to memory of 3736	4708	file.exe	102
PID 3736 wrote to memory of 4152	3736	cmd.exe	105
PID 3736 wrote to memory of 4152	3736	cmd.exe	105
PID 3736 wrote to memory of 4152	3736	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 456
  2⤵
  - Program crash
  PID:4580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 772
  2⤵
  - Program crash
  PID:4760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 764
  2⤵
  - Program crash
  PID:4228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 764
  2⤵
  - Program crash
  PID:1344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 812
  2⤵
  - Program crash
  PID:4216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 928
  2⤵
  - Program crash
  PID:1108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 932
  2⤵
  - Program crash
  PID:4552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1048
  2⤵
  - Program crash
  PID:4212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1368
  2⤵
  - Program crash
  PID:2304
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:3736
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 492
  2⤵
  - Program crash
  PID:5108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4708 -ip 4708
1⤵
PID:4676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4708 -ip 4708
1⤵
PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4708 -ip 4708
1⤵
PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4708 -ip 4708
1⤵
PID:3124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4708 -ip 4708
1⤵
PID:3908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4708 -ip 4708
1⤵
PID:4292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4708 -ip 4708
1⤵
PID:1080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4708 -ip 4708
1⤵
PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4708 -ip 4708
1⤵
PID:2316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4708 -ip 4708
1⤵
PID:4164

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4708-132-0x0000000000B49000-0x0000000000B70000-memory.dmp

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memory/4708-133-0x0000000002610000-0x0000000002652000-memory.dmp

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memory/4708-134-0x0000000000400000-0x0000000000868000-memory.dmp

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memory/4708-137-0x0000000000B49000-0x0000000000B70000-memory.dmp

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memory/4708-138-0x0000000000400000-0x0000000000868000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads