nymaim | eda9c8a15ee3a7aafafd66c28622b543e3c4d4c5abc2b8157a05588bcb2be0a2

Analysis

max time kernel
133s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08/10/2022, 17:48

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General

Target
file.exe
Size 399KB
Sample221008-wde6lafcbr
SHA256 eda9c8a15ee3a7aafafd66c28622b543e3c4d4c5abc2b8157a05588bcb2be0a2
MD5 33a4ef5140cf4ead64915cd2dc747b60
SHA1 8fd5d7ea90019ea7b1f9bc1e7dab2eab19ae0870
SHA512 3a565d7ae97d8615787edee99f03d24c72f0ee010632ad4a892749f2cd02a315d88110b2d733e37249840dfb15fe09cf735940c3bc3ab3b7a79d2b9beb214e1c
SSDEEP 6144:RMGB+mFqMiKakuM8KzLb3+W7mjezNLVFWzjkimMxMPT5FhsrwVfXQ:R3cMiKZuM8KzLbuWpNLHWzjki/MP1s
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
3472	dhIdoIg.exe

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
4772	1956	WerFault.exe	81
4924	1956	WerFault.exe	81
1724	1956	WerFault.exe	81
3100	1956	WerFault.exe	81
3268	1956	WerFault.exe	81
4836	1956	WerFault.exe	81
4680	1956	WerFault.exe	81
3096	1956	WerFault.exe	81
1416	1956	WerFault.exe	81
3112	1956	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
404	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1956	file.exe
1956	file.exe
1956	file.exe
1956	file.exe
1956	file.exe
1956	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	404	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 3472	1956	file.exe	99
PID 1956 wrote to memory of 3472	1956	file.exe	99
PID 1956 wrote to memory of 3472	1956	file.exe	99
PID 1956 wrote to memory of 1460	1956	file.exe	109
PID 1956 wrote to memory of 1460	1956	file.exe	109
PID 1956 wrote to memory of 1460	1956	file.exe	109
PID 1460 wrote to memory of 404	1460	cmd.exe	113
PID 1460 wrote to memory of 404	1460	cmd.exe	113
PID 1460 wrote to memory of 404	1460	cmd.exe	113

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 452
  2⤵
  - Program crash
  PID:4772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 772
  2⤵
  - Program crash
  PID:4924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 764
  2⤵
  - Program crash
  PID:1724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 764
  2⤵
  - Program crash
  PID:3100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 836
  2⤵
  - Program crash
  PID:3268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 928
  2⤵
  - Program crash
  PID:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 1000
  2⤵
  - Program crash
  PID:4680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 1140
  2⤵
  - Program crash
  PID:3096
- C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\dhIdoIg.exe
  2⤵
  - Executes dropped EXE
  PID:3472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 1448
  2⤵
  - Program crash
  PID:1416
- 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:1460
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 1548
  2⤵
  - Program crash
  PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1956 -ip 1956
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1956 -ip 1956
1⤵
PID:4744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1956 -ip 1956
1⤵
PID:4156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1956 -ip 1956
1⤵
PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1956 -ip 1956
1⤵
PID:4348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1956 -ip 1956
1⤵
PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1956 -ip 1956
1⤵
PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 1956 -ip 1956
1⤵
PID:1484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1956 -ip 1956
1⤵
PID:3036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1956 -ip 1956
1⤵
PID:1776

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

Replay Monitor

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Downloads

dhIdoIg.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\dhIdoIg.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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dhIdoIg.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\dhIdoIg.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/1956-138-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1956-132-0x00000000006CD000-0x00000000006FE000-memory.dmp

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memory/1956-142-0x00000000006CD000-0x00000000006FE000-memory.dmp

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memory/1956-143-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1956-134-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1956-133-0x0000000002250000-0x00000000022A3000-memory.dmp

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memory/1956-146-0x00000000006CD000-0x00000000006FE000-memory.dmp

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memory/1956-147-0x0000000000400000-0x0000000000468000-memory.dmp

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