nymaim | 9ed7bf0f134ff65ed05d5e69cd178cdb8bc6b47d0e537bd660eb0cf04dd9223f

Analysis

max time kernel
91s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 09:41

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General

Target
file.exe
Size 396KB
Sample221007-lnsjkacah4
SHA256 9ed7bf0f134ff65ed05d5e69cd178cdb8bc6b47d0e537bd660eb0cf04dd9223f
MD5 488e59a618ce5fc7e5890d48184a91b5
SHA1 0cbd485a0e45a41b95457fee9a3185e23874047e
SHA512 dcadd1c331387a53379d52e1d6474b1389bce6f645803a60bcfaab870f38a6eb7ac300de7118f4727e0828694724d3984dbb7e4631be9c7204c6c52f8d9df338
SSDEEP 6144:wPvKnKJEf2M4C8QWH1fTigKmPKbkAoeBuzbgwunWKwVfs:wXyWOtWHkpbwAoAunnY
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
3888	IWqH4.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-1-5-21-2295526160-1155304984-640977766-1000\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
2176	2116	WerFault.exe	80
4404	2116	WerFault.exe	80
1744	2116	WerFault.exe	80
2092	2116	WerFault.exe	80
3076	2116	WerFault.exe	80
208	2116	WerFault.exe	80
3896	2116	WerFault.exe	80
1596	2116	WerFault.exe	80
4896	2116	WerFault.exe	80
4624	2116	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3204	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2116	file.exe
2116	file.exe
2116	file.exe
2116	file.exe
2116	file.exe
2116	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3204	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 3888	2116	file.exe	103
PID 2116 wrote to memory of 3888	2116	file.exe	103
PID 2116 wrote to memory of 3888	2116	file.exe	103
PID 2116 wrote to memory of 376	2116	file.exe	109
PID 2116 wrote to memory of 376	2116	file.exe	109
PID 2116 wrote to memory of 376	2116	file.exe	109
PID 376 wrote to memory of 3204	376	cmd.exe	112
PID 376 wrote to memory of 3204	376	cmd.exe	112
PID 376 wrote to memory of 3204	376	cmd.exe	112

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:2116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 460
  2⤵
  - Program crash
  PID:2176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 772
  2⤵
  - Program crash
  PID:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 808
  2⤵
  - Program crash
  PID:1744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 808
  2⤵
  - Program crash
  PID:2092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 772
  2⤵
  - Program crash
  PID:3076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 928
  2⤵
  - Program crash
  PID:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 1000
  2⤵
  - Program crash
  PID:3896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 1040
  2⤵
  - Program crash
  PID:1596
- C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\IWqH4.exe
  2⤵
  - Executes dropped EXE
  PID:3888
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 1452
  2⤵
  - Program crash
  PID:4896
- 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:376
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 524
  2⤵
  - Program crash
  PID:4624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2116 -ip 2116
1⤵
PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 2116 -ip 2116
1⤵
PID:728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2116 -ip 2116
1⤵
PID:1600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2116 -ip 2116
1⤵
PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2116 -ip 2116
1⤵
PID:4940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 2116 -ip 2116
1⤵
PID:2136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 2116 -ip 2116
1⤵
PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2116 -ip 2116
1⤵
PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 2116 -ip 2116
1⤵
PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2116 -ip 2116
1⤵
PID:3092

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

IWqH4.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\IWqH4.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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IWqH4.exe

Path C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\IWqH4.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/2116-138-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2116-134-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/2116-132-0x000000000077D000-0x00000000007AE000-memory.dmp

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memory/2116-142-0x000000000077D000-0x00000000007AE000-memory.dmp

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memory/2116-143-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/2116-133-0x00000000006C0000-0x0000000000713000-memory.dmp

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memory/2116-146-0x000000000077D000-0x00000000007AE000-memory.dmp

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memory/2116-147-0x0000000000400000-0x0000000000468000-memory.dmp

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