nymaim | fe30369ef1c3f03d98d0b7a2aafe20678b9ce0edaafa28d12f997bf6eabc6121

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
10/10/2022, 09:22

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General

Target
file.exe
Size 406KB
Sample221010-lbw18abda4
SHA256 fe30369ef1c3f03d98d0b7a2aafe20678b9ce0edaafa28d12f997bf6eabc6121
MD5 cb81f675cfcc30c65e260d9379c30fa3
SHA1 3c7eeb0dec65e46bca358a68e3f2cff11e336aa0
SHA512 1101eef57fe9d335c30c8670cb9264c292d95985a202472df173b298c72cf42c29537c7bb3cc958f9b26156291f878fe94277b26bf50b24586a1593279ae4ba4
SSDEEP 6144:ev6i8Shp2x/kpC1/9FuS9CRCZhRHGzhUzxJYwDUrV3l39QrwVfquS:evfhp2y2WdRCfRkJzrJl+d
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
2032	OUONiFSQZgxdAz.exe

Deletes itself 1 IoCs

pid	Process
1064	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1336	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
1056	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1336	file.exe
1336	file.exe
1336	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1056	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 2032	1336	file.exe	29
PID 1336 wrote to memory of 2032	1336	file.exe	29
PID 1336 wrote to memory of 2032	1336	file.exe	29
PID 1336 wrote to memory of 2032	1336	file.exe	29
PID 1336 wrote to memory of 1064	1336	file.exe	30
PID 1336 wrote to memory of 1064	1336	file.exe	30
PID 1336 wrote to memory of 1064	1336	file.exe	30
PID 1336 wrote to memory of 1064	1336	file.exe	30
PID 1064 wrote to memory of 1056	1064	cmd.exe	32
PID 1064 wrote to memory of 1056	1064	cmd.exe	32
PID 1064 wrote to memory of 1056	1064	cmd.exe	32
PID 1064 wrote to memory of 1056	1064	cmd.exe	32

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:1336
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\OUONiFSQZgxdAz.exe
  2⤵
  - Executes dropped EXE
  PID:2032
- 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:1064
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1056

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

OUONiFSQZgxdAz.exe

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

Submit Download

OUONiFSQZgxdAz.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\OUONiFSQZgxdAz.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/1336-66-0x0000000000400000-0x000000000046B000-memory.dmp

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memory/1336-55-0x000000000063A000-0x000000000066A000-memory.dmp

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memory/1336-61-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1336-65-0x000000000063A000-0x000000000066A000-memory.dmp

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memory/1336-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

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memory/1336-56-0x0000000000220000-0x0000000000273000-memory.dmp

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memory/1336-68-0x000000000063A000-0x000000000066A000-memory.dmp

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memory/1336-69-0x0000000000400000-0x000000000046B000-memory.dmp

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memory/1336-57-0x0000000000400000-0x000000000046B000-memory.dmp

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